My identity as a bully was exposed when I slept in math class

Xu Cong accidentally fell asleep in the class of his grumpy brother Mr. Liu. In order to avoid punishment and not make a fool of himself in front of the whole class, he had to expose his identity as a Xueba from that day on, Xu Cong's campus life has completely changed teachers of various subjects: you can do whatever you want in class. If you are tired, you can sleep by yourself and don't care about us classmate: Xu Shen, how do you study? Can you teach me some tricks? I can do anything for you Xu Cong: teacher, do you call this a problem?