If there is any name that can scare the students of Jianyang No. 1 Middle School, there is only one person - the mathematician, □□.
He is a middle-aged and elderly man who is said to always hold a tea-stained coffee-colored glass in his hand, a long bunch of keys tied around his waist, a beer belly, and reading glasses.
Xiao He once wrote the name of his wife on the wall of the toilet. When he pulled down the zipper and was about to release it, he was forced back by a heavy blow from behind by Lao Ban. He then cleaned the toilet for a month.
Damn it, □□ has a grudge against me!