Veteran television personality Kan Kwok Leung and new wave filmmaker Leung Po Chih co-directed the 1988 comedy "Keep Dancing," starring Miu Kwan Yan, Samo Hung, Eric Tsang, Ng Yat Wah, Wong Jam, Li Heung Kam, Meng Hai, Lin Yi Lian, and Lam Kin Ming. In the film, Miu Kwan Yan plays two roles as twin sisters, Cheung Nga and Cheung Yi. Cheung Yi originally resides in a mental hospital but cleverly tricks Cheung Nga into entering the hospital and swaps identities, then goes out into society to search for her unfaithful ex-husband. The story unfolds with Cheung Yi meeting a postman who has unrequited love for Cheung Nga, and through feng shui, she encounters a wealthy man, Tong Sha Wong. The three of them surprisingly get along well. Cheung Nga initially planned to stay in the hospital for a short time, but after daily interactions with the bizarre medical staff and patients, she discovers that this life is quite enjoyable and gradually forgets everything from the outside world, including her fiancé...