A police officer from the Jialin City Public Security Bureau, a good young policeman.He was the apprentice brought out by Zhang Cheng, and he had a very good relationship with Zhang Cheng.He is impulsive and has a passionate personality, but in fact he is also a meticulous and thoughtful policeman.When interrogating Xiao Heyun and Li Shiqing, they always said "circulation", which I didn't understand, so they would get very irritable almost every time they were interrogated in a cycle.