Jiētóu zhī wáng (2012)

Yue Feng is a young thug with exceptional streetfighting abilities. He will stop at nothing to defeat all challengers - until, in an tragic accident, he kills a fellow competitor and is sent to prison. Eight years later, Yue Feng emerges a changed man. He no longer fights, and is looking for a new life of peace and fulfillment. But it's brutal on the streets, and redemption doesn't come easy. His brotherhood is destroyed, family members murdered, and a loved one humiliated - a deadly chain reaction that leaves him no choice but to unleash his power in the name of justice.

Unfortunately the movie Jiētóu zhī wáng is not yet available on HBO Max.