These days, I feel relieved to see my children reading and doing homework quietly beside their breathing, and the study PM 2.5 index continues to maintain a single digit level. I also began to understand why the "applicable area under acceptable noise" of air purifier is a very important indicator that was once ignored.

Write at the front

The year 2017 is drawing to a close, which is an important year for me and my family. The child is 6 years old and has been in primary school. Recalling the ups and downs of the past six years, he is really filled with emotion. My father and I used to be extremely confused, worried, worried and anxious, because we had to face the burden of raising our children and supporting our family with two people, and the severe scarcity and forced fragmentation of time made the simple word "nine to five" become an unreachable luxury. In desperation, after repeated weighing, I left the workplace and became a full-time mother. But my desire for work and career has not made me endure too long in the days when I cannot sleep at night. Finally, God closed a door and opened a window for me. The foreign trade manager successfully turned into a novel translator, allowing me to slowly start my new career in the "leisure" time after the children fell asleep.

Hard work, lack of sleep, tired eyes... these are nothing to me. I know that only by persevering can we be able to eliminate public debate and overcome difficulties unimaginable to outsiders. We live in this era, and the difficulties are not only limited to food, clothing, housing and transportation, but also formidable words and moral kidnapping. When I heard similar remarks again and again - you study so hard, you have such a high degree, why quit to take care of children—— At that time, I chose silence, because no one knew our real situation, except the father of the child. What I can do is to insist on doing what I think is right, and do it well. This year is the fifth year for me to translate novels. My 19th work, The Lost Actor, has been launched in Xinhua Bookstore and e-commerce websites at the end of December, and the 20th book, The Berlin Blacklist, can also be published before the Spring Festival. Those who question me may no longer have the opportunity to talk with me face to face, because they can no longer take back their prejudices and irresponsible words.

I wrote such a prelude, not to tell my own story, but to insist on it. In fact, the motivation for me to continue to adhere to it, to a large extent, is also due to the example of Luo Laoluo. From a speech master to a big player in the mobile phone industry, Lao Luo has faced difficulties, pressures, hardships and disputes in recent years, even ordinary visitors can feel one or two of them. Lao Luo has always insisted that, from the first generation of mobile phone operating system to today's nut Pro2 mobile phone, countless times have been recognized as the past, but each time the new answer can make people feel amazing. At the press conference at the end of November this year, Nut Pro2 mobile phone was praised by many players as the best "Luoji" mobile phone so far, just like a butterfly born from a cocoon. Although the competition in the mobile phone industry is still fierce and the pattern is still turbulent, the gifts Lao Luo brought to fans are not only mobile phones, but also the best words and deeds of "perseverance".

Along with the nut Pro2 mobile phone, there is the smart air purifier for breathing freely, which is the theme of this article today.

Mother's wish

As I said earlier, although I have achieved a phased victory in dealing with the challenge of full-time mother&part-time work, I have already felt that I am unable to meet another challenge. For several winters in succession, because of the increasing haze, the good habit of daily outdoor exercise of the whole family, which we finally cultivated, was mercilessly braked by the air quality warning. Sometimes, even on weekends, three people in a family have to stay at home to tell stories and watch cartoons. At most, I can DIY some hand baked cakes to cheer up my mood, but I still can't get rid of the loss and helplessness of the environment.

We can't control the outside air. At least the situation at home can be improved. Since last winter, air purifiers have become as important electronic products as computers and mobile phones. When it is cold, our first reaction is not to turn on the hot air conditioner or heater, but to let the air purifier start working. I have used two or three air purifiers myself, some of which are from my own home and some of which are from my parents' home. I also have a slight understanding of the basic characteristics and differences of the products. With the coming of winter this year, I began to consider whether I needed a new air purifier at home.

The reason is very simple. When the child went to school, we opened a separate study for him. In this way, the child became more independent and spent more time alone. There was only one air purifier in the living room, and the noise was a little loud. I think it is necessary to choose a new low noise air purifier for him. Coincidentally, I saw the news of the Hammer Technology Conference. After Lao Luo introduced the nut Pro 2 mobile phone, he announced the new member of Hammer Technology - breathe freely and talk freely, showing eloquence and making the public further realize the importance of the air purifier.

After watching Lao Luo's speech, I remembered two key indicators.

1. The CADR value of smooth breathing exceeds 800m ³/h, which is the most luxurious equipment among household air purifiers at present.

2. Because of "1", Lao Luo proposed the concept of "applicable area under acceptable noise".

The indicators of the air purifier are not many, and the principle itself is not too complicated, so the market is young, so there is no real example. Can this big guy with Lao Luo's feelings be better than other brothers and sisters? Thanks to Hammer Technology and“ Love to play computer games ”The experience opportunity provided by the platform enables me to feel the actual effect of the air purifier at the first time, and makes the children's new study have a special quiet freshness.

It's really big, but it's smart

Although I was psychologically prepared, I was really shocked when the SF Express dispatchers delivered my breath to me.

The chest for breathing is more than one meter high, a section higher than the desk, which is totally different from other brands of air purifiers I have seen before. I weighed it with both hands. In fact, the machine is not very heavy. I can barely move him into the child's study alone, so I don't need to bother the father to help him go home.

There is a sticker on the box, which intuitively explains how to open the box easily. In fact, the whole process from unpacking to installation and use, including paper instructions and electronic instructions, has adhered to the principle of "detail first", described each step in great detail, and there are humanized stickers everywhere. Even the elderly and children can easily learn and operate by hand.

Compared with the desk lamp, pen container and other objects on the desk, the volume of breathing is really huge. However, there is a reason to be big, because big can achieve 800+CADR; Because it is large, better purification effect can be achieved in low noise mode; Because of its large size, it can be used freely on filter elements, motors and other parts... After all, air purifiers are not mobile phones, and portability is not a must.

The appearance of this machine is warm and elegant, and the front looks a bit like a mobile phone, because the circular display screen in the middle is very similar to the fingerprint identification module on the mobile phone. The color of the display screen is integrated with the panel, and the color value is higher. It is estimated that the process is more complex. The green symbol of breathing freely makes people understand and turn their home into a green forest, which is the ultimate goal of the air purifier and the wish of every user.

On the official website of ChangBreath, we can see that the machine's figure has reached 384x384x819mm. What's the concept? As a mother, I have a say. I am almost the height of a boy of one and a half years old. If the clock goes back five years, it will be very interesting for my child to take a group photo with Chang Breathe. But don't worry, I will put a group of photos of freshmen playing and breathing.

The top of the machine is just a square. Oh, no, it should be a square with rounded corners. There is a row of working status indicators on the front, and only one key in the middle is the "Mode" selection key. At the far end, there is something that looks like an indicator light. It is a light sensor. After turning off the light at night, the machine will automatically enter the sleep mode. The noise is very low, which will not affect the rest of the family.

Look at the light sensor from another angle.

From left to right, there are six indicators, namely, extreme speed, sleep, automatic, manual, child lock and filter element. I think the child lock function is very interesting, but the filter indicator light gives me a little doubt. In my opinion, this may mean that the life of the filter element cannot be represented by the percentage state diagram, and this idea has been confirmed after the installation of the App.

There are two buttons on the back of the body, namely the power button and the Wi Fi network pairing button. There are only three buttons in total for smooth breathing. You can learn all operations in one minute.

Because the machine is very high, the area of the side air inlet can be large. This is a profile close-up.

Symmetrical design is adopted on the left and right. The air duct structure for smooth breathing is three side air inlet and top air outlet, so the back plate is also full of air inlet holes.

See the word "open cover" and the number "1" on the backplane? This is not easy. After completing the whole process from cover opening to filter element installation, you will find that this "1" is the beginning of the humanized installation assistant.

The basic composition of appearance elements seems to have been studied almost. However, I almost forgot the most important part. It is not easy to move such a large machine with only the left and right handles! Frankly speaking, if breathing is really like the traditional air purifier, which can only be carried by hand, his modeling design will be a complete failure.

The appearance of four wheels has changed all this. With four casters at the bottom, breathing and moving is very smart and effortless. From one room to another, you can easily push past, even a 6-year-old child can easily do it.

Casters are universal wheels, which rotate very flexibly, which also solves another problem of smooth breathing: is it too overqualified for such a large machine to purify only one room?

Well, a good air purifier, of course, does not rely on its own appearance. The internal filter quality and the actual purification effect are the real test stage. First, open the rear cover and install the filter element.

It is easy to open the back cover, because the connection between the back cover and the body uses a magnetic suction module, which is stable and not easy to damage.

The metal parts embedded in the fuselage correspond to the strong magnetic parts on the back cover. Generally, only very high-end household appliances will use such a low-cost magnetic back cover structure, which also makes the back cover easy to open and install.

The small box in the center of the fuselage is the PM 2.5 detector. At this time, I noticed that there was also a simple manual on the inside of the back cover. Hammer Technology really pays attention to details.

If you are a player who is using the air purifier for the first time, this notice is very useful, because it specifically mentions that you should remove the protective sleeve of the filter element. Otherwise, it seems that it is not a case that we let the air cleaner run all winter without taking the protective sleeve, right?

Remember the number "1" I mentioned earlier? Now the numbers "2" and "3" are coming.

It turns out that from 1 to 3, it is the whole process of opening the rear cover, taking out the dust filter screen, and installing the filter element. Experienced old users may not be aware of it, but every new user can get started instantly. This attitude is moving. I did an experiment to let a 6-year-old child complete an installation independently. In the middle, I helped him only when unlocking and locking. Other times, he could complete the operation independently.

Let children participate in it, which is the best plan to try whether the humanized design is excellent or not.

The default equipment is the above three pieces: host, HEPA dust filter screen, haze and formaldehyde removal efficient composite filter element. Careful friends may notice that there is also a hatch above the machine, where a special filter element for formaldehyde removal can be installed, but this part is optional, and it costs 699 yuan to purchase separately.

To be honest, the separate purchase cost of this original haze and formaldehyde removal efficient composite filter element is 799 yuan, which looks really expensive. However, the core of the air purifier is the filter element. Fans, chips, circuit boards, etc. are actually accessories. So I think as long as the filter element is genuine, the cost is not a problem. In fact, the difference of air purifiers depends largely on the difference of filter elements.

As for the physical and chemical principles of the filter element itself, I admit that as a liberal arts student, I cannot understand them too thoroughly and deeply. However, based on the comparison of several filter elements, I noticed one detail: the smooth breathing filter element is naturally used more materials because of its larger volume. Using the common sense that the area of the cerebral cortex determines the IQ, the larger the total area of the filter element, the better the filter effect and the longer the service life. I went to the official website of Hammer Technology to check, yo, it really confirmed my guess.

This filter element with large size and strong performance is the basis for smooth breathing to achieve CADR800+. It not only has a fast purification speed, but also has increased the cumulative purification amount. Longer life, diluted the average daily use cost.

If the host's house has just been decorated, formaldehyde removal must become a key consideration. Although Changqi has its own haze and formaldehyde removal composite filter element, it also provides a formaldehyde removal super activated carbon filter element for the use environment where formaldehyde pollution is particularly serious, to further accelerate the formaldehyde dissipation and ensure the health of family members.

If the optional filter element is purchased separately, it is installed at this position of the machine, near the top.

The top door can be removed by gently pressing the mechanism on both sides.

By scanning the QR code with your mobile phone, you can directly place an order to purchase the filter element, further saving the time spent in the process.

If I move to a new house in the future, I will fill it up.

After installing the filter element, remember to buckle this lock, which is a little laborious. This is the only step my son failed to complete when installing alone.

The stickers here are highly praised by my son. Although he only knows five words, they do not hinder him from correctly installing the power cord.

For adults, considering that the machine is often placed on the floor, if you want to see the inside of the interface clearly, you have to lean over and almost lie on the ground, even with the help of a flashlight, which is really inconvenient.

Both children and adults need this sticker. Unfortunately, we can't see the same care on most household appliances.

At this point, I believe that friends have already had a basic thread about the appearance design and modeling structure of breathing, and I will not repeat anything else. Lao Luo said that in order to make the air purifier more powerful, its volume must be larger, so Hammer Technology has worked hard to build the largest household air purifier on the market so far. The cramped house I live in obviously does not reach the standard of 96 ㎡, which means that the machine does not need to run at full speed in most cases. I have no doubt that with the arrival of 800+CADR value, there is also a beautiful vision of remarkable effect in silent environment.

New partner in the study

My son hasn't finished school yet, so I first connected the power supply for smooth breathing and had a preliminary feeling.

In the afternoon, the outdoor PM 2.5 index was over 100, and in the study it was 52~55.

By default, the machine is in automatic mode. The noise is very low, and it is almost inaudible. I think the sound will be quieter in sleep mode.

The study is not big, only 10 square meters. After only 5 minutes, the PM 2.5 index dropped to single digits.

As an individual user, I may not be able to arrange many purifiers in a row for cross measurement, nor can I accurately measure how many square meters of rooms have been cleaned and how much time has been spent. But I can definitely verify the fact that breathing can purify a study in a very quiet mode in only 5 minutes. I watched the number on the display screen go from 53 to 005.

That's enough, isn't it? What we need is a machine that is easy to use, a practical machine that does not need to turn on the extreme speed mode frequently, or even the extreme speed mode does not need to be turned on for a long time.

Ouch, it's time for me to pick up the little guy and go home.

On the way to pick up my son, when I looked at the clock at 3:00 p.m., I could not help but be grateful again for my luck over the years. Working at home in SOHO, you can control your own time. This may be the only way to raise children and work at the same time. From birth to kindergarten, to primary school, nine to five is still a moonflower in the mirror. But today's situation is much better than six years ago!

It was a cold winter night in February, and the Spring Festival holiday had not yet ended. My son came to this world. What comes with him is more responsibility than joy. Considering the comprehensive situation of my family, I had to give up my foreign trade work for many years and become a full-time mother. At the end of maternity leave, I returned to the company for a very difficult half month, and finally decided to submit my resignation. Since then, it can also be called the foreign trade work of petty bourgeoisie. The nine to five rhythm of life may never come back.

Living in an impetuous and noisy metropolis, it is difficult for me to put my heart down completely, let alone selectively ignore the family economic pressure caused by my loss of full-time job. I am eager to make more contributions to my family, but I feel powerless every day. I really don't want to hire a babysitter to take care of the children around the clock. Moreover, to be honest, the cost of hiring a babysitter is not a small amount. Maybe my own job will become working as a babysitter. At that time, looking at my son's sleeping face, I would meditate for a long time every day, not to mention how many tears I shed.

Thanks to technology, thanks to the Internet, thanks to destiny, thanks to the times. The hard work and anxiety did not last too long. I found a SOHO job that I could do at home. The content was novel translation. Fortunately, I learned English seriously when I was in school, and I like reading literary works since childhood. This job is relatively smooth. The most important thing is that I can freely choose the working time. Even if I have to work for eight hours every day, I can choose to work after the children fall asleep, or work after kindergarten and primary school, and the children go to and from school, I am not bound.

Yes, it is very hard, very hard, very difficult. Taking care of children's food, clothing and living alone is a hard job in itself. I believe parents with children can understand it. I don't believe that many people will feel relaxed if they work purely to earn money. Insist on taking care of children and taking care of work? What kind of experience is this? More than six years later, I can proudly say: I survived!

I didn't get enough sleep one day, didn't watch a movie, didn't eat a big meal outside... This kind of life is totally different from my past experience. For my children and family, I finally passed this period of time which is much harder than senior three. As the theme song in Back to Twenty sings: Don't be sad, don't lose heart, no rain will never stop

As a "full-time" mother in the true sense, these years of taking care of children and working at the same time have experienced the ups and downs of the world. Although the total working hours are actually quite long, staying up late is common, but I am very grateful that technology and the Internet have changed the fate and life of our generation, at least I can ensure that the mission of caring for children is not delayed by work. After all, for the sake of children's health and happiness, it is the mother's most willing responsibility, and all the hard work is worth it. As children grow up, they become more and more intelligent and sensible, which is the most beautiful scenery in mother's eyes.

When my son came back from school, he saw his new partner in the study at a glance, and was immediately excited. He couldn't wait to jump onto the desk and study the shape and buttons of his new partner carefully. Yes, for children over 6 years old, electronic products are no longer mysterious.

"Mom, this new air purifier is so big!"

"Yes, my child. It will be better if it is large."

"Mom, here's a button..."

"Mom, why does it always sound the alarm?"

"Ha ha, I have set the child lock function to prevent children from clicking randomly."

"Oh, I'm no longer a child. Let me play with it. I won't break it. Didn't I learn the old air purifier quickly?"

"Well, in fact, I just want to test the child lock function. Only children under three years old need it."

"Just open it, Mom."

My son was very serious. He pressed the "mode" button one by one. I took the opportunity to teach him the words "extreme speed", "sleep", "manual" and "automatic", and let him experience the difference of air volume in different modes.

"Aha, it's really simple. Mom, this new machine is simpler than the old one."

"Yes, try again."

"Mom! Why can't you press it again? Are you locked again?"

"Well, you found it. OK, don't keep pressing it. This is not a toy."

"Eh, why did the screen go out? But the machine is still moving."

"Look at the indicator light. It is now in sleep mode. The screen will automatically turn off in sleep mode, so as not to affect people's sleep."

"Oh, is it always very quiet in sleep mode?"

"Boy, you are so smart!"

"Son, my mother wants to assign you a small task."

"Okay, okay! What is it?"

"You press the mode button, switch to different modes, and then tell me your feelings, such as whether the noise is loud or not, and whether the wind is strong or not."

"No problem!"

"Mom, I'm going to press it."

"Well, the first round is the extreme speed mode, the one with the biggest wind."

"Ouch, a little scared."

"Wow! The wind is so strong and a little noisy, but it's quite comfortable."

"If you work in this mode, reading, doing homework and sleeping, I'm afraid it will not work, right?"

"Well, try turning it to a slow speed."

"Mom, it's much more comfortable."

In the slow mode, my son, lying on his stomach and enjoying the breeze, reminds me of the sleeping kitten in a picture of breathing freely.

My son likes his new partner in the study very much. After a happy half hour, I reminded him that he should go to pick up his schoolbag and try to finish more than half of his homework before dinner.

Learn together with breathing

The curriculum rhythm of primary school is very different from that of kindergarten. It's only half a semester since then. My son has learned all Pinyin and knows a lot of Chinese characters. His half term Chinese test paper is more difficult than his second grade test paper in my opinion, but he still got 98 points. I don't think that junior children should try to win 100 points or the first place. After all, learning is a matter of perseverance. It is a victory to persist until the end. It is bad for the enthusiasm of learning in middle school and university to exhaust their potential prematurely. So on the one hand, I seriously check and fill in the gaps for my child, and on the other hand, I try to control his learning rhythm, leaving enough time for playing and reading extracurricular books.

Turn on the desk lamp and start to write homework and read English. Today's homework was completed in less than an hour.

In this process, the smooth breathing on the desk has always been very quiet, without affecting the little guy's concentration.

After finishing my homework, before it was time for dinner, I was ready to cook and fry. My son said he wanted to see the picture book again.

I took out the new picture book borrowed from the library and let him read it by himself. Over the years, I have watched him go further every day than yesterday. At first, I read and he listened, then I read and he looked. Then, he could ask me questions, understand the picture by himself, and gradually understand Chinese characters. The process of children's growth is colorful, and I also get growth and happiness from it.

Let's talk again about the "applicable area under acceptable noise". The true meaning of this sentence is that in ordinary home applications, breathing can provide clean air for family members with almost no noise. In addition to the well-known sleeping occasions, children's reading and homework occasions also need a quiet environment, don't they?

The rice cooker has been turned on. I went back to the study, took out the newly bought decibel meter, and prepared to test the ambient volume.

In the low speed mode, the noise measured by the decibel meter is 47~50db. Eh, it seems to be different from the official declaration of more than 30 db? But my son and I listened carefully. The machine has been quite quiet!

Later, after careful consideration and research, I found the answer. The environment we live in already has environmental noise, and the official noise data is tested under strict conditions of complete silence. Even if Changqi is turned off, my son and I hold our breath. The ambient noise is still more than 30db, and in many cases more than 40db, which means that Changqi will not produce additional noise in low speed mode.

That's enough, isn't it? Human ears are more intuitive than data.

The total noise is generally less than 50db after several measurements in low-speed mode. This noise has no effect on children's reading and homework.

For the sake of comprehensiveness, let's try other modes.

At medium speed, the noise cannot be ignored, but the impact is not too great, and the overall level is generally about 60db. In the medium speed mode, children can also read books, because the machine is relatively close to people, so they feel a little uncomfortable.

In the extreme speed mode, the air purification effect and speed are obviously the best. The high noise in the extreme speed mode is a common feature of all air purifiers. This does not indicate whether an air purifier is good or bad. It just tells us that it is meaningless to just look at hard indicators. There is a specific problem between practicality and hard indicators.

"Son, you can read by yourself for a while. Mom has gone to cook. Dad will go home soon. Hurry up and wash your hands when it's time to eat."

"Good mother."

App usage

Like other air purifiers, Changxing has its own app, which can be downloaded and installed by scanning the mobile phone code according to the instructions.

This advertising slogan is very real, very stylish, not boastful. After the installation, I registered a new account with my mobile phone.

The humanized appearance is the same as the inside. The help function of this app is super detailed, and it even comes with an official recorded unpacking installation video. If the filter element has not been installed at this time, compared with the video, the process will be simpler and more reliable.

The process of online pairing is illustrated one by one.

The App has a fresh interface, simple operation and not many functions, so I just pick some interesting points to talk about.

The app has its own screenshot function, which is more convenient than the screenshots of the mobile phone system. Of course, the saved pictures are also cleverly added with breathing advertisements. Sharing them will naturally increase exposure.

It seems that the original purpose of this function is to help families and companies with multiple breathing machines better manage their equipment. But in my home, the name is changed to "the purifier of the study", which is more warm and intuitive.

I also found some screenshots that can represent this app and made a summary of this app.

In a word, after all, Changqi is a newcomer in the field of air purification. The app is beautiful, and the documents and videos are detailed and detailed. However, the adjustable functions and parameters are somewhat less. In addition to the six speed adjustment in manual mode, other functions can also be completed by bypassing the App, which is also faster. In my opinion, it is necessary for App to add the service life percentage of filter elements. In addition, after the installation of large filter elements and small filter elements (additional formaldehyde filter elements), should they also be reflected in App? Otherwise, the intelligent elements of the App will appear weak.

App is software, which is easier and faster to update than hardware. I hope the new version of App can bring more functions.

Write at the end

Once again, thanks to Hammer Technology and the trial platform of "Ainongji", I had a wonderful time with my family to make the air cleaner.

Our generation, as well as our children, will inevitably experience the pain of development before governance, so the reality cannot tolerate our regret and sadness.

Lao Luo also said at the press conference that although he hoped that everyone and every family would no longer need air purifiers, at least in the future for a long period of time, air purifiers will be a necessity in large cities.

However, I cannot help worrying about the future.

When I was in primary school, I read a science fiction article to the effect that human beings can build huge undersea cities in the future, and the operation principle is similar to that of space stations. A few years ago, I studied the 007 series of old films and saw a work with the theme of the Underwater City. Science fiction lets us boldly imagine the wonderful and free life under water or in space. Of course, the following is a huge technical problem and a super inconvenience to life. Then let's look at our living environment today. Will the scenes in science fiction be staged in advance or partially one day? Will the earth become Mars? Do you need to wear "spacesuit" when going out? I wish I were worried about nothing.

It's said that the sky in Beijing is bluer than before this year. I hope this is a good thing for sustainability. Chengdu has become the largest city with the most serious air pollution in December 2017. When will it be the turn of governance?

Well, stop here and go back to the Changqi air purifier.

The ability to quickly reduce the PM 2.5 index to below 10 without making obvious noise in the process is the core advantage of smooth breathing and the essence of the product that can be covered in one sentence.

With the casters at the bottom, it is easy to move and breathe freely. With the addition of 800+CADR value, a room of 20-30 square meters can be cleaned in 5-10 minutes. Therefore, it can become a purifier shared by the whole family.

Additional optional formaldehyde filter elements and smooth breathing masks provide users with more complete anti haze solutions, which I think can be called a package solution.

In general, breathing freely shows us Lao Luo's determination to do a good job in air purifier, and adds more variable factors to the already competitive air purifier market. Although the update iteration of the air purifier is not as frequent as that of mobile phones, there is still room for further exploration, such as reducing the volume under the same performance, further improving the App, and introducing different models and styles. It is hoped that Hammer Technology can continue to devote 100% of its energy to building products and extend the spirit of overcoming difficulties in the mobile phone field to the air purifier.

Epilogue

Before going to bed, my son told me a story. He conceived of an air purifier that he could carry with him. Perhaps his inspiration came from a picture book about divers that he had just read a while ago.

To my surprise, the structure he said is very similar to the concept product that has begun to take shape on the market.

I told him that such a product might be made, but I didn't want you and I to live that life.

Admittedly, the air purifier is a necessity at this stage, but I really don't hope that it will continue to develop and evolve endlessly for 30 or 40 years like computers and mobile phones. If one day even the air purifier has "Moore's Law", I really don't know whether it is a joy or a light sorrow.

"Good night, son!"