As the ages of Sung corresponded to the Kamakura period in Japan when Zen sect was prosperous, Zen monks who went to Tenmokuzan (Zhejian Province) in Zhejian Province, which was the center of Chinese Zen sect, brought back the products to Japan together with the practice of drinking tea.
その頃日本では禅宗が盛んになった鎌倉時代にあたり、中国禅宗の中心であったあった浙江の天目山(浙江省)に留学した禅僧が喫茶の習慣とともにこれを日本に持ち帰った。