I’m looking for a Chinese or Korean movie from the 80s , comedy and kung-fu or karate style. The main characters are a father and his two sons. First son is good, the second son is evil. The father is in a wheelchair, he has white hair, beard and moustache and dressed all in white. The evil son supposedly accepted it but later attacked a father. There is also a girl (maybe 10 years) old and she has an actor buddy(s) who were filming a movie about the mafia and at that moment when there is shooting there is a Jennifer Rush - “The Power of Love” song.
Every help will be appreciated. Thank you in advance. 
“A Heroic Fight” (1986), also known as “Yong chuang jiang wu”, a Taiwanese action-comedy
I skimmed through the movie and the only detail that does not seem to fit is that the grey-haired older dude is not in a wheelchair, but the other details seem to fit.
IMDb:
https://www.imdb.com/title/tt0099766/?ref_=mv_close
You can watch the full shit on YouTube here, the scene where the band and the female singer sing the Jennifer Rush “The Power of Love” song and the shooting starts begins about at the 0:29:00 mark:
The older dude with the grey hair and mustache, in white clothes and with the ca. 10-year old girl:
The band and the female singer sing the Jennifer Rush “The Power of Love” song:
The gangster arrives with a gun and the shooting starts:
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