I'm sure about the one in the middle is Lam Ching Ying.But don't know about the others,i think the one on the left is Peter Chan and the right one Chung Fat.They have some resemblance.

My dear friends,

This is my first post here. I am Katalin, webmaster of LamChingYing.com. I am a devoted fan of your site, even though I do not post here due to my hectic life as a housewife.
I try my best to maintain the Lam site, not only because I love Hong Kong movies and Lam Ching Ying especially, but because that site changed my whole life.

Ekisha did a great job, that is DEFINITELY Lam Ching Ying. I own all his movies and have seen him in many early films. We do not know much about his "stuntman" years, only the fact that he started working in 1968, at the age of 16 and worked constantly without listed in the credits. This is a perfect proof that he appeared in this movie as well.

Thank you so much ekisha.

Welcome! Excellent site as well.

Thank you Gaijin84 for the kind words.

Added Lam Ching-Ying to the cast list.

Great! Thank you! I am adding it too to the Lam Ching Ying site. (I have a few more addition requests. I will post them with proper screen caps. )