In the early Jiading years of Emperor Renzong of Song Dynasty, Su Xun, Su Shi, Su Zhe and his son all arrived in Tokyo (today's Kaifeng City, Henan Province). Due to Ouyang Xiu's appreciation and praise, their articles quickly became famous all over the world. Scholars and officials rushed to pass on and recite it, and for a while scholars competed to imitate it. Wang Pizhi of the Song Dynasty recorded in "Mianshui Yan Tan Lu·Cai Shi": "Su's articles are famous all over the world, and his articles are called San Su. Gai Xun is Lao Su, Shi is Da Su, and Zhe is Xiaoye." "Three Su" This is where the title comes from. Su and his son actively participated in and promoted the ancient prose movement advocated by Ouyang Xiu. They both achieved high achievements in prose creation, and were later included in the "Eight Great Masters of Tang and Song Dynasties".