Beijing Opera is my favourite. Bao Zheng always has a black face and Guan Yu has a red face in Beijing Opera. But many people don't know why. I come from America and I have lived in China for six years. I like Beijing Opera very much. I think Beijing Opera is very interesting. I can learn a lot about Chinese history. Now let me tell you the art of Beijing Opera facial  paintings . In Beijing Opera facial paintings, different colours and patterns  are for different roles. For example, a black face for fair   people. A red face is for brave  people. A white face is for bad people. Blue and green faces are for heroes . The gold face is for gods. The writer thinks he can learn a lot about   _   by watching Beijing Opera.
Chinese history American history different colours different patterns