Ji dou shou xing 1996

Penny and Wendy originally are co-workers and best friends until Wendy is promoted. Penny feels that she is getting old and can't compete with Wendy, she leaves Hong Kong, takes snake blood to cleanse herself, and then returns to Hong Kong for revenge.

Cast:

Carrie Ng
Penny Ng 

Diana Pang
Wendy Pang 

Bowie Lam
Sam Hui 

Mak Cheung-Ching
 

Stuart Yung Sai-Kit
 

Chung Sau-Han
 

• Evil Instinct