It's the 1979 movie "A Gathering of Heroes" (Gan jin sha jue).
Chan Sing
Polly Shang-Kuan Ling-Feng
Yasuaki Kurata
Ying Fung Chen
Kei Ho-Chiu
Eddy Ko Hung
Fa Yuan Li
Griffin Yueh Feng
Director
Ni Kuang
Writer
Wong Cheuk-Hon
Producer
Chan Hsi-fan
Production Manager