"Tell me, how come I, a person who failed mathematics in college, became a mathematics teacher in the Imperial College?"
This is the sentence Zhang Zhen has said most to his students since he traveled to the Great Xia Dynasty. After finally explaining to the students why one plus one equals two, and making up a few theorems to fool the Lord Jijiu, Zhang Zhen had not had time to receive this month's salary, but he was targeted by Xie Zhiqing, a famous heroine in the world.
Xie Zhiqing: Why don't you teach me mathematics!
Zhang Chen: Xie Nuxia, if you can come out of my arms first, and then remove the sword from my neck, I promise that I will teach you 100% seriously!
Xie Zhiqing: What is 100%?
Purpose: Learn mathematics, physics and chemistry well, and be not afraid of traveling all over the world