The Kid With A Tattoo (C-Movie) (HK-Movie) (1980)

In this flick, Wong Yu is Ah Tung, the son of a cotton merchant played by Ku Feng. Ah Tung is also a friend with a beggar (Yuen Pih) who teaches him gung fu. Ah Tung’s Sifu is not your everyday beggar. He is an undercover police officer who is hot on the trail of a contraband and opium ring led by Ho Chang Shang (Wang Lung Wei). To get rid of the beggar/cop, Ho Chang Sheng, hires one of his partners, spearman Yip Fei (Yuen Wah), to kill off the cop posing as a beggar. In the midst of all this killing is a confused kid, Ah Tung, he who thinks his father (Ku Feng) is involved with the killing. In the end, Ah Tung, using his wit, guile and gung fu, manages to deliver all the bad guys to justice before undergoing training to take over his old man’s business.