Gai juk tiu mo 1988

Name: Gai juk tiu mo
Released: 1988-05-07
Cast: Eric Tsang Chi-Wai, Richard Ng Yiu-Hon, Stanley Sui-Fan Fung, Charlie Chin Chiang-Lin, Loletta Lee Lai-Chun

Synopsis:

Cheung Sheung and Tze Ngor are twin sisters. Tze Ngor is a lunatic and stays in a mental hospital. But out of a madcap incident, Cheung Sheung is "cheated" into the hospital, exchanging identity with her insane sister. The mad house is lived by all kinds of weirdos. The "game" is that Cheung Sheung will stay in the hospital only for a while. But strangely enough, she gradually becomes more and more ease with the way of life in the hospital until one day, she's forgotten what life is like...