Li An (李安), also called Ang Lee, is the most active female referee currently. [Photo provided to chinadaily.com.cn]

Li An, also called Ang Lee, is the most active female referee currently. She went to Australia to study and work very early and gained much experience. She also won trust from the China Billiard & Snooker Association (CBSA) and the World Professional Billiards and Snooker Association (WPBSA) because of her good performances.