Nan Yin Master Au Kwan-cheung is among today's most important Nan Yin performers. Nan Yin is a Chinese style of storytelling which dates from the Song Dynasty, the words themselves are poems over a fairly simple instrumentalNan Yin background. Nan Yin performed by blind musicians was a popular form of entertainment in Canton and Hong Kong up until the middle of the last century. In addition to traditional stories, the musicians' improvisations on current affairs and local life were among the significant features of this genre.