Yang Li-tsing (born 13 December 1968), better known internationally by her stage name Cynthia Khan, is a Taiwanese actress, dancer and martial artist. She starred in many Hong Kong girls with guns films.
Yang studied Chinese and jazz dance at school. At 17, she won a national talent contest run by a Taiwanese television station. She later learned taekwondo and achieved a high level in this martial art.
In 1987, Yang made her film debut in In the Line of Duty 3. The film's box office success started her long career. Sequels and other films followed, many of them in the girls with guns genre, most notably In the Line of Duty 4: Witness, directed and choreographed by Yuen Woo-ping and co-starring Donnie Yen.
She now lives in Taiwan.
Her screen name is a combination of the names of established Pennsylvania action star Cynthia Rothrock and Malaysian star Michelle Yeoh (then known as Michelle Khan), both whom were prominent in British Hong Kong films; she replaced Yeoh in the In the Line of Duty movie series.