[Serious statement, please do not imitate the methods mentioned in this section in reality]

The situation is extremely critical, Zheng Yuan may fall down at any time, and the firefighters don't know how long it will take to arrive, Liu Chen is not sure whether there is an inflatable cushion in a small place like Gyeongju in 2003. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

At this moment, the onlookers below were buzzing like headless flies, and no one knew what to do.

After all, Liu Chen's mind was mature, he saw this situation, felt that he had the responsibility to do something, his mind turned sharply, and he made a rough calculation, and he knew it in his heart.

There are a lot of flowers and trees in front of the science and technology museum, all of which are bought from the flower and tree base next door, most of them are flowers and shrubs, and the buffer coefficient is much stronger than that of the concrete floor.

The first time he rushed over to move flowers and trees, the other classmates were stunned and couldn't understand what he was doing, they just looked at Zheng Yuan above and exclaimed, the strength of one person is limited, Liu Chen exclaimed, "You still don't come to help?"

For the first time, Dunin rushed to help, but he didn't understand the reason.

"Flowers and trees can increase the buffer, a few more people come and help!"

Everyone looked at each other, and finally a few more people helped, and moved the flowers and trees below together, Liu Chen felt that it was still not good, if he jumped down with such a big momentum, it would be terrible to stab him in the body, but he could save his life.

Gotta lay something!

Looking around, there is a girls' dormitory building on the side of the science and technology museum, girls love to clean, today's sun is very good, the colorful quilts and sheets are drying, and they waved to a few brothers who helped and ran over together, these people trusted Liu Chen in a short period of time, and ran over with a greeting.

While the other male classmates were stunned, Liu Chen took these rough old men to hug all the colorful quilts and sheets, and spread several layers on the flowers and trees to increase the buffer.

After doing this, Liu Chen and the others were sweating profusely, and their hearts were settled at this time, even if this dead kid fell, he would be injured by a fall, and he would definitely die.

However, according to the rough calculation just now, these buffers may not be enough, seeing that there are still two quilts and some sheets, Liu Chen hurriedly started to tie the four corners of the two quilts with sheets, and let the two big boys grab one corner each.

At this time, the other classmates also knew that Liu Chen did have a way, and more people came up to help, dragging five boys in one corner, and the two layers of quilts were stacked on top of the flowers and trees at an interval of about 30 centimeters, and the four corners were tightened.

Using these buffering methods, Liu Chen was finally relieved, wiped the sweat on his forehead, and looked up, Zheng Yuan was still very excited, and rushed forward after a little thought.

There is no elevator in this science and technology museum, and when I rushed to the roof, my legs were so tired that I was trembling.

There were five classmates standing on the roof of the building, and the Gu Witch was actually there, which made Liu Chen very surprised, and the Gu Witch was even more surprised when she saw Liu Chen, but now she didn't care about settling accounts with him.

It turned out that Gu Witch was also the Chinese teacher of Class 7, and she was quite familiar with Zheng Yuan, and the head teacher of Class 7 didn't know where to run, so she was afraid that coming up would stimulate Zheng Yuan more.

"Zheng Yuan, don't be excited, there are still two months to go, everything is still possible. Gu Witch shouted, and the other classmates also echoed, "That's it, far away, you come down first." ”

Zheng Yuan shouted hoarsely: "It's useless, it's useless, in the past three years, I've worked hard, but the results have been very poor, I've tried any method, but it doesn't work, I'm not this material, I'm sorry for my mother, I'm sorry for my sister, I'm dragging them down, I damn ......"

"Far away, you are still so young, don't think about it, you haven't experienced the beauty of college yet, where you can read and study freely, and there is no more pressure from the college entrance examination, and there is a beautiful ...... love"

Before Gu Witch finished speaking, Zheng Yuan waved his arm, almost unable to stand and fell, and there was another exclamation below, he shouted: "I can't get into college, I can't get into college at all...... The green tendons on his neck can be seen clearly.

Gu Yuan didn't know what else to say, and a bunch of reassuring words didn't work, but it made Zheng Yuan even more emotional.

At this time, how can it be said that the university stimulates him, I really don't know if Gu Witch is anxious or stupid, Liu Chen can't care about it, pulls her back, and shouts: "You shut up for me, go to the back and stand obediently." ”

At this moment, it is definitely the attitude of Dr. Niu of Jianghai University towards the elementary school girl who has just entered the laboratory.

Gu Witch was blinded, she didn't expect the students in the class to dare to scold her like this, but she didn't react for a while, and stood behind very obediently.

"If I had good grades, I would have been able to get into college and get a scholarship, and my mother and sister wouldn't have to work so hard to save for me, and in the end, I wouldn......'t be able to get into college."

As soon as Liu Chen heard it, he knew that his thinking had completely entered a dead end, and no matter how he comforted him at this moment, it was useless.

For such an urgent matter, Liu Chen couldn't be as calm as water, but he was also a person who had died once, and his mentality was much calmer than that of ordinary people, and he slowly walked forward with a calm face.

"You idiot, can't you get into college and still complain about others? It's because you haven't studied well!" Liu Chen scolded.

These people have always comforted him, and Zheng Yuan was a little uncomfortable with this scolding.

"Do you think you're dead? Look below. ”

Zheng looked down blankly, his body shook again, and he almost fell, but he was still able to stand firm.

Seeing the quilt pulled up below, he didn't know what Liu Chen meant.

"Idiot, momentum theorem, can you calculate how much impulse you will have if you jump like this?"

Zheng Yuan studied too hard, he was stupid, and when he talked about the momentum theorem, he instinctively thought about what it was, looked at the sky, and thought blankly.

Two firefighters and the principal Sun Shuren came up at this time, and one of the non-commissioned officers, who was in his thirties, saw the situation and made a gesture for Liu Chen to continue, while they went around to the side of the sphere and prepared to climb up to save people.

"Isn't the momentum theorem equal to the amount of momentum change?" Zheng Yuan was a little confused.

"What's the impulse?" Liu Chen asked loudly.

"The product of force and time. ”

"What is the change in momentum?"

Zheng Yuan thought a little hard, Liu Chen saw it and understood why he spent so much time, but his grades were so poor, he couldn't even get such a basic concept well, what was the use of doing more questions.

"The product of mass and velocity change. ”

"What is the speed at which you are standing at a height of 20 meters and falling to 1.5 meters?" asked Liu Chen.

Several other classmates and Gu Witch were stupid, Liu Chen actually gave Zheng Yuan a physics problem on the spot, this guy who was crazy about how to comfort him, actually followed his train of thought to do the problem!

It's incredible.

The two firefighters had already secretly climbed up, and they were about to stand firm to catch Zheng Yuan, Zheng Yuan had a headache when he thought about it, and when he looked down and saw the two of them, he immediately trembled.

The hearts of the people were lifted again.