Drug War (2012) on Netflix

After losing control of his car and crashing into a local restaurant, a man loses consciousness on the street. Later, while working on a case, the police's anti-drug division captain, Zhang Lei (Honglei Sun), realizes that the man in the crash is drug lord Tian Ming (Louis Koo). In order to avoid the death penalty, Tian Ming helps the police put a stop to the entire drug trafficking circuit, but just as soon as the police are ready to make a large bust, Tian Ming makes a decision that shocks everyone involved.