When Genju KEIAN, who returned from the Ming dynasty, traveled around Kyushu, he was invited by the Kikuchi clan in Higo Province and the Shimazu clan in Satsuma Province to give a lecture; and later, he established the Satsunan school (school of Neo-Confucianism in Satsuma).
桂庵玄樹は明から帰国したのち、九州を巡歴して肥後国の菊池氏や薩摩国の島津氏に招かれて講義し、のちに薩南学派を開いた。