Su San refers to Su Xun (No.Lao Quan and his son Su Shizhizizhan, whose real name is Dongpo Jushi) and Su Zhe (1039 ~112). "Three Sus" are three of the eight famous prose writers in Tang and Song Dynasties, namely Han Yu and Liu Zongyuan in Tang Dynasty and Ouyang Xiu, Su Xun, Su Shi, Su Zhe (Su Xun is Su Shi's father and Su Shi is Su Zhe's brother), Wang Anshi and Ceng Gong in Song Dynasty. (divided into two Tang families and six Song families). In the early years of Jiading, Song Renzong, Su Xun, Su Shi and Su Zhe all went to Tokyo (now Kaifeng, Henan). Because of Ouyang Xiu's appreciation and reputation, their articles soon became famous all over the world. Scholar-bureaucrats scrambled to tell stories, while literati scrambled to imitate them for a period of time.