I found a familiar face when watching a New Fist of Fury when Chan Sing got ambushed, i think 100% it's Lu Feng. Since that scene is too fast, i need to watch frame by frame to identify him.

I watched my blu-ray.

Added Lu Feng (Thanks)
and also Hsu Tian-De, Ricky Cheng, Ma Tin, Li Chin-Kuang
and tagged more images on the old cast page.