*Extracted from Wiki*
Bian Lian (Biàn Liǎn; literally "Face-Changing") is an ancient Chinese dramatic art that is part of the more general Sichuan opera. Performers wear brightly colored costumes and move to quick, dramatic music. They also wear vividly colored masks, which they change within a fraction of a second.
The face changing, or "bian lian" in Chinese, is an important aspect of Chinese Sichuan opera. Performers wave their arms and twist their heads, and their painted masks change again and again and again.