I was dressed as an ancient illiterate county magistrate. At the beginning, I was implicated in a fraud case in the imperial examination and was about to be executed.
In prison, I tore off the paper, made a paper airplane, and flew out of the prison window.
The next day, people all over the city picked up the "Flying Book from Heaven" written full of words.
The emperor was furious and went to the prison in person: "Sorcery! Burn this monster for me!"
I calmly took out a copy of the "Barefoot Doctor's Manual" and said, "Your Majesty, before you kill me, do you want to read this prescription for treating the plague?"
Later, the enemy's iron cavalry approached the city and clamored to "borrow" our paper-making technology.
The emperor looked at me: "My dear, what do you think we should do?"
I lifted up the red cloth at the top of the city, revealing the trebuchets that had been working all night, and the mountains of "paper":
"Your Majesty, it's time for them to see what 'knowledge' means to change war."