Shang Chen

A red headed villain (with a blue headed son), a witch and the warriors and monk that fight the two badguys. (The Movie Database)

Two petty adolescent street urchins Lo and Lung become inseparable sworn brothers who survive the cruelty of the streets. They are separated after Lo gets caught by the law trying to steal food. Years later, Lung grows up to be an enforcer for a gambling syndicate not knowing that it also fronts as a narcotics ring. To contrast Lo is raised in a law enforcement household and is sent out to investigate drug activity in the region. (imdb)

AKA Peking Express; The discovery of the skull of Peking man scares the Japanese, because they've been purporting their false superiority. The existence of the relic would challenge the foundation of the myth of the Japanese Emperor. Pride overcomes reason, so the Japanese send a crack unit to China to destroy the specimen. One man stands in their way.