Wang Yihai is the youngest son in the family, and the first two elder brothers immigrated abroad, so the two parents who stayed in the old house were mainly taken care of by him. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

called his parents, and the next day happened to be the weekend, Wang Yihai took his wife and daughter to the compound where the old man lived.

His father, Wang Ming, was originally a professor at the School of Geology, and the unit on the second floor of the compound was where Wang Yihai grew up. Although it is cramped and simple, the old people are used to living in decades-old houses and are reluctant to leave. After Wang Yihai got married, he moved out of the old house, and the old man's life was taken care of by Aunt Shen, a nanny with a generous personality.

After knocking on the door, an old lady with silver hair and a smile on her face, pursed her mouth, opened the door and looked at them.

At this look, the smile on her face suddenly couldn't be hung up, and an elegant old lady opened her mouth in surprise, pointed to her little son outside the iron gate tremblingly, and blurted out: "Xiaohai, what is this thing on your head?"

"Hahaha, grandma, is it fun?" Wang Yihai's daughter Wang Xin shook her head, and the transparent bubbles wrapped around her ponytail moved with her shaking head.

It turned out that Wang Yihai's family of three was all holding breath bubbles!

"Ah, what is this?" Hearing the movement, Wang Ming, the old man who came out to see the situation, was also taken aback.

"Grandpa, listen to me. Before Wang Yihai could explain, Wang Xin's eyebrows fluttered, and he preemptively told the two old men what he saw from Yu Jing's article.

Two elderly people in their eighties were amazed to hear it.

"This kind of good thing?" Wang Ming pushed the glasses on the bridge of his nose, and was skeptical. Apparently, he had lived for more than eighty years and had never seen such a physical object. He raised his arm and poked the transparent bubble on Wang Yihai's head with his index finger, with a slight resistance, but it was not too difficult, and his finger burrowed into the bubble.

"Dad, do you want to try it, you and your mother haven't gone out for a walk for a long time," Wang Yihai pointed to the somewhat gloomy weather, wanting the old man to go out to exercise.

Unexpectedly, Wang Ming waved his hand absentmindedly, then put his hand behind his back, crooked his neck, stared at Wang Yihai's head in a daze, and slowly paced around him, seeing Wang Yihai's heart hairy.

"Dad, what are you doing here?" Wang Yihai couldn't help but ask.

"I'm researching!" said the old man thoughtfully.

"Grandpa, what are you studying?" Now, it was Wang Xin's turn to be puzzled.

"There's a lot to study. Facing the good granddaughter's question, Wang Ming came back to his senses slightly, and said with a smile, "Come, you sit down, grandpa will talk to you." ”

Wang Ming was the first batch of college students after the founding of the People's Republic of China, worked in the front line of geological survey in his early years, and later entered Beijing University to preach and teach, and even returned to work for nearly ten years after retirement. When he saw the transparent bubbles on Wang Yihai's head, what he thought was much deeper than Wang Yihai's.

"You see, your father said that this transparent bubble can prevent the damage of pollutants in the air to the human respiratory system during hazy weather. So, let's think about it from another perspective, since it can be used in ordinary urban air, if it is placed in an extremely harsh environment, can it also be used?" Wang Ming slowly said the thoughts he was pondering in his heart to Wang Xin, and the eyes of the people around him lit up, and he couldn't help but follow his words and start associations.

"Just like your grandmother, you know, your grandmother is still an honorary professor in the Department of Archaeology of Beijing University, and when she gets older, her respiratory problems become more and more serious, because when she was engaged in field archaeology in the early years, the conditions were insufficient and she did not do a good job of protection. ”

"I know!" Wang Xin is obviously a child who cares about current affairs, she clenched her fist and smashed her palm, suddenly realized, and said by inference, "There are reports in the news that some working environments are bad, such as mining operations, a large amount of dust hurts the respiratory tract and lungs of workers, and it is very easy to produce terrible diseases such as pneumoconiosis and silicosis. ”

Wang Ming happily touched his bare head, heard his granddaughter's example, nodded constantly, and said, "That's right, my family is smart, hahaha!"

"Dad, if you say that, then the purpose of this breath bubble is extensive. If equipped with this kind of bubble, it is equivalent to workers being able to avoid a series of harsh environments such as dust and lack of oxygen, so that their most important respiratory system is in high-quality air.

"Well, I'll call Xiao Yue right away, give him these dozens of breathing bubbles, and ask him to organize experiments to see if the air in the bubbles can maintain the level of ordinary environments in various environments. Even if Wang Ming lives at home, he can't change his old pedantic temperament, muttering in his mouth while preparing to make a call on his mobile phone. The Xiaoyue in his mouth is his protégé, and he is currently the dean of the School of Geology of Beijing University.

The relationship between the two teachers and students is very strong.

When Wang Yihai heard Wang Ming's decision, he was a little anxious. He sat on the old spring sofa in the small living room, and said unhappily: "No, this is the old one I bought for you, and I mean that you can go out for a walk, feel comfortable, and give it all away." These breath bubbles are hard to come by!"

"What? no!" The phone was being connected, Wang Ming rolled his eyes, stopped Wang Yihai's complaining, snorted, and said, "I'm happy, I'm willing!"

"Dad, this is what I bought!" Wang Yihai was so angry that he stomped his feet in anger.

"It's not bad for your money! I will send you a red envelope from WeChat. ”

The others looked at the two fathers and sons with almost identical expressions speechlessly.

The phone was connected, and a bright male voice came from the phone.

Wang Yihai could only hold his breath, grabbed an apple on the table, didn't wash the skin, and gnawed on Kazkaz.

After the old man finished communicating with his student Yue Mingchen, the other party was ready to set off immediately, come here to take away the breathing bubbles, and immediately start the research experiment.

Old man Wang Ming invited him to lunch by the way.

Hanging up the phone, the old man was in a good mood, seeing Wang Yihai sulking on the side, he felt a little guilty, and just wanted to say something, but was suddenly interrupted by Wang Xin's shout.

"Wow, Grandpa, Daddy, I got it!"

"This breathing bubble is so interesting! Our school fire safety knowledge introduction, people who died in the fire, many people were not burned to death by the fire, but under the thick smoke, lack of oxygen choked to death, if everyone carries the breathing bubble with them, is it more guaranteed life safety?"

"Also, uncles firefighters, it would be safer if you equipped this breathing bubble!"

"By the way, in the plateau area, can you also use breathing bubbles to resist altitude sickness?"

Wang Xin was completely in the stage of exploding ideas, she excitedly walked around the narrow living room, and even took out the small notebook in her backpack to record her inspiration.

"Haha, I've decided, I'll write this semester's comprehensive practice paper! Haha, it will definitely be unprecedented and amazing to the whole school! The title is called "On the Comprehensive Utilization of Breathing Bubbles". Daddy and grandpa, I'm going to check the information!"

Wang Yihai's father and son were stunned by the sudden outbreak of this little girl.