There are two endings. One is the China censored version, where Louis Koo got handcuffed with Honglei Sun at the end, arrested and receive death penalty with lethal injection. The other ending is Louis Koo got away in the end, and seen by Yi Huang at Thailand and he got away again
Near the end of the movie at a primary school, there is a shootout. If shots are fired within city limits, usually police cars and ambulances are dispatched and arrive within minutes, yet there aren't any sirens to be heard in the distance, and no police vehicles or ambulances show up.