Cao Rui: In ancient times, Shaoxing Wolongshan tea was called "Longshan Cao Rui". Wang: Preface to the Customs of Huiji: "Snow Buds Cast in the Sunshine, Longshan Cao Rui." Du Mu: "Title Tea Mountain": "The mountain is a Soochow show, and the tea name is Rui Caokui." "Cao Ruikui", tea is the leader of Cao Rui.