I make a popular science video and all the emperors learn from it!

Chen Yu did not know that the popular science videos he produced had spread to various dynasties.

The emperors saw a different world through popular science videos, which constantly changed their outlook...

...

[Ten crops with the greatest scientific contribution to mankind]

Ying Zheng: Where is this America? I have to go!

Lao Zhu: Is there such a magical food in the world? If you give it to us, the people of Ming Dynasty will definitely have enough to eat!

...

After the popularization of science, they were actually asked to take a test?

All the emperors: Khan, I was just watching the video and didn’t even remember it.

What!

Give credit based on their grades?

This credit can actually be exchanged for the crops in the video, and can also be exchanged for novel items that have never been seen before...

All the emperors: Bring me pens, ink, paper and inkstones. I want to get full marks!

...

And Chen Yu slowly discovered that something was wrong with the object of his science popularization.