It looks very probable that Chi Chi
http://www.hkmdb.com/db/people/view.mht ... ay_set=eng
is an alias for Tsui Oi-Sam
http://www.hkmdb.com/db/people/view.mht ... ay_set=eng
since that heavy actress is seen in the films which have Chi Chi in the cast list (and Tsui Oi-Sam is not in the cast list for such films). For example, here is her appearance in Dirty Kung Fu
http://www.hkmdb.com/db/movies/image_de ... ay_set=eng

Does anyone have any opinion?