Your Chow Chi-Kei looks like Yue Hang.
That one looks like Chow Chi-Kei:

http://hkmdb.com/db/movies/image_detail ... ay_set=eng

Your Ting Kwok-Sing looks not correct - Chin Han again???
Fung Hoi looks like a second image of Shih Jun.

That one could be Ng Ho:

http://hkmdb.com/db/movies/image_detail ... ay_set=eng

I didn't saw the movie.

I did not add these names. Changed Chow Chi-Kei. Removed double error Ting Kwok-Sing and Fung Hoi images. And thanks.

The movie is in YouTube http://www.youtube.com/watch?v=G2TT2mG_JzI

I found 2 roles in HKFA, so I identified Yu Tien-Lung http://hkmdb.com/db/movies/image_detail ... ay_set=eng
and Fung Hoi http://hkmdb.com/db/movies/image_detail ... ay_set=eng

and this is Wong Ho(1) http://hkmdb.com/db/movies/image_detail ... ay_set=eng

and this is Tin Man-Chung http://hkmdb.com/db/movies/image_detail ... ay_set=eng