Wai-Chi Wan

Referred to as Hong Kong's answer to "Misery", innocent-looking Bo-Bo Fung is an overprotective mother/nurse who is bent on revenge at all costs after the death of her son at the hands of policeman Lau Ching-Wan. Veronica Yip stars as a gambling addict who enlists Lau to protect her from loan sharks, and eventually returns the favor in order for him to survive Nurse Lam's relentless assault. (imdb)

Sean Lau has been secretly in love with comely Vivian Chan since childhood, so when she needs a paper marriage to satisfy the wishes of her sick mother, he's a pushover. This doesn't sit too well with her naturalist boyfriend, who seems to like cockroaches more than her. And now the omens are against them: the day they've chosen for marriage is the very same one that Lau's strict aunt demands for his mother's funeral. (themoviedb)