What kind of people does "Tsing Yi" in Beijing Opera represent?

Tsing Yi occupies a non-major position in Danhang and generally plays the role of maid. The age is generally from youth to middle age. Without old age, old age will become old. Zheng Dan's performance is characterized by singer, small movements and steady movements. Reading white is rhyming white, generally speaking, it is not scattered white, and the singing skills are quite heavy. For example, Wang Baochuan in Three High Five, Li Yanfei in Ergong and Luo Fu in Sang Huiyuan.