Why Cao Liyang bothers to press a poor student?

Now, sitting in the private room of a famous bar in R City, Cao Liyang’s arrogance is obvious. He doesn’t look like that gentle young man when he was with Zeng Tian.

Cao and Zeng are both 25 years old. Most of their peers have just graduated from university and they change jobs frequently in order to build a career. Maybe some of them have settled down and started to save money for a house or their wedding. ...