According to the HKFA

http://ipac.hkfa.lcsd.gov.hk/ipac20/ipa ... ex=NAMEBRP

that 2 are one person:

???
Lui Wai-Man (1)
Aliases: Lui Wei-Wan

Filmography (1972-1994)

Action Director (1 film)
Treasure Castle (1972)
Producer (3 films)
Mutiny on the High Sea (1975)
Love By Post (1976)
Underground Judgement (1994)
Actor (1 film)
Treasure Castle (1972)
Presenter (7 films)
The Tiger Jump (1974)
Mutiny on the High Sea (1975)
Strife for Mastery (1977)
Shaolin Invincible Guys (1978)
The Crane Fighters (1979)
Beggars Have No Equal (1980)
Underground Judgement (1994)

and

???
Raymond Lui Shing-Gung ?
Aliases: Lui Gung, Lei Kung, Lui Wai-Man (3), Lei Cheng-Kung

Filmography (1971-1994)

Action Director (4 films)
The Tiger Jump (1974)
The Crane Fighters (1979)
The Marvelous Kung Fu (1979)
Bloody Mission (1982)
Producer (1 film)
The Crane Fighters (1979)
Director (8 films)
The Tiger Jump (1974)
Strife for Mastery (1977)
The Fatal Flying Guillotines (1977)
Shaolin Invincible Guys (1978)
The Marvelous Kung Fu (1979)
The Crane Fighters (1979)
Bloody Mission (1982)
Underground Judgement (1994)
Actor (17 films)
The Crimson Charm (1971) ... Tsao Kang's son
Story of Thirty-Six Killers (1971)
The Angry River (1971)
The Brutal Boxer (1972) ... Hsiao Cheng
Honor and Love (1973)
Excelsior (1974) ... Lung Shih Chieh
The Honey-Moon Killer (1974)
Sleeping Dragon (1974)
The Iron Profligates (1974)
The Tiger Jump (1974)
Mutiny on the High Sea (1975)
My Funny Intern (1976) ... Fang Sin
Strife for Mastery (1977) ... Shing-gung
Shaolin Invincible Guys (1978)
The Crane Fighters (1979) ... Blue Fan
The Marvelous Kung Fu (1979)
Bloody Mission (1982) ... Pu Tien Hsia
Writer (6 films)
The Tiger Jump (1974)
Strife for Mastery (1977)
The Fatal Flying Guillotines (1977)
Shaolin Invincible Guys (1978)
Bloody Mission (1982)
Underground Judgement (1994)

If no one objects I merge the names.

Done:

http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng