Rinjoin was from Hangzhou, Zheijiang Province, China, came to Japan in 1349, lived in front of the buildings of Kango-jinja Shrine and made steamed buns for the first time in Japan.
林浄因は現在の中国・浙江省杭州市出身で、貞和5年に来日し、漢国神社社頭に住居して日本初となる饅頭を作ったという。