Man on the Brink (1981)
Original title: 邊緣人
Man on the Brink is a 1981 Chinese-language crime movie directed by Alex Cheung Kwok-Ming, with a running time of 1h 40m. It stars Eddie Chen, Kam Hing-Yin and Lun Chia.
An undercover cop goes deep undercover to inside one of Hong Kong's most notorious Triad gangs only to find him getting consumed by a life of crime and seediness.