According to HKFA,???, 1923/12/23- ??..http://ipac.hkfa.lcsd.gov.hk/ipac20/ipa ... 1@!horizon
and not Zhang Yun-Zhong / (???) http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
Shd be Melvin Cheung Wan-Man / (???) http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
I saw Melvin in the movie.

Also:

Liu Wai (1) / (??(1)) http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
who act as Gulugan
Chai No / (??) http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
who act as Naka

Cd they be the same person as:

Lu Wei / (??) http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
Pei Xiang / (??) http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng

Can anyone confirm and update?

removed Zhang Yun-ZHong and added Melvin.