My Teacher Is a Thug

Jia Tianxiong (Li Nanxing) is a gambler and addicted to drinking. He was asked to do a mission to spy on someone and disguised himself as a teacher in SCP school. He met Zeng Kaixin (Bonnie Loo), a teacher in the school. But, on Kaixin's birthday, her foster father told her that he is not her biological father.