A Fist Within Four Walls
Set in a walled city in the early 1960s, a talented martial arts novice bears the heavy burden of protecting his community from evil.
Starring Ruco Chan, Benjamin Yuen, Nancy Wu, Philip Ng, Yuen Qiu, Grace Wong, Cheung Kwok-Keung, Moon Lau, Chi-Sing Lam, Carlo Ng
Watch "A Fist Within Four Walls" on Tubi TV released in 2016. It's a action & adventure and crime show, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of show, and is currently available to watch for free.