The second game is the famous traditional game of paper airplanes.

The rules of the competition are simpler: mom and kids fold the paper airplane themselves, and then start from the same starting point, and whoever flies the farthest will win.

Before the competition, Lin Yanxi casually asked: "Paper airplanes are very common and simple games, who knows the scientific principles of paper airplanes?" ”

Several children were eager to try it and raised their hands one after another:

"I know!"

"I know!"

Lin Yanxi named the names of the four children one by one, and the first three answers were strange.

What Liu Xinyue said was: "The plane should fly in the sky!" ”

Tang Muze's answer was: "It's because of the wind!" ”

Xi Xinyan replied timidly: "Maybe it's because of inertia?" ”

[Yanyan knows a lot! Also know inertia! Hahaha...... It's a pity that the answer is wrong! 】

The last answer was Si Yihang, he was the youngest of the four children, Lin Yanxi didn't hold out any hope, but just asked symbolically: "Hanghang, do you know?" ”

As a result, Si Yihang nodded extremely confidently: "I know!" ”

Then he gushed into the camera about a methodical principle: "The principle of its flight is aerodynamics." The air creates an upward lift and a backward thrust on the paper airplane. When the thrust is greater than the lift, the paper airplane flies forward......"

[Wow! I just checked it out, and Hanghang is right! 】

[This must be a four-year-old child's knowledge, more than my 30-year-old aunt knows!] Shame is hard to be ......]

[Hanghang won't be a reborn boss, right? ] 】

[A look upstairs is rebirth, and I have seen too much! ] 】

……

Si Yihang's highlight moment did not end here, under the amazing gaze of the host Lin Yanxi, he continued to ask: "Hanghang, then do you know how to fold paper airplanes to fly farther?" ”

Suddenly, the four-year-old little cute baby listed two major points almost without thinking: "The design and throwing of paper airplanes have a great impact on the distance traveled. ”

"Let's talk about the design of paper airplanes first, we need to pay attention to the following points:

First, the lighter the weight of the aircraft, the better the flight performance;

Second, the design of an aircraft's wing affects lift.

Thirdly, the position of the aircraft's center of gravity also affects flight performance. If the center of gravity is back, the paper airplane will take off more easily, but the flight is unstable; If the center of gravity is forward, the paper airplane will fly more steadily......"

Si Yihang is like a paper airplane expert, gushing a bunch of principles, and methodical, whether it is the adults on the scene or the netizens in the live broadcast room, they are all amazed:

[Hanghang is too lost! Please take my knees! 】

[The Internet is a constant reminder that I'm a piece of rubbish!] 】

[Hanghang's theory is set by one, but I don't know how to practice! 】

[Don't talk nonsense, just do it, go on! ] 】

[Sit back and wait for the moment when Hanghang slaps your face, hahaha...... Is my heart too bad? 】

……

Wen Siyu also leaned over in disbelief and asked, "Hanghang, how do you know so much?" It can't be an open-eyed lie, right? ”

Si Yihang held his chest extremely confidently: "Do you look like me?" ”

Wen Siyu nodded solemnly: "It's like - amazing!" ”

She almost believed it!

Silently patted Si Yihang's shoulder, Wen Siyu said earnestly: "Little friend, please keep a low profile!" You have to take it easy to brag, ok? ”

Si Yihang didn't refute it, just smiled and said, "Let's see the result directly!" ”

(End of chapter)