Xu (1836— 1907) was born in Jiading, Jiangsu (now Jiading, Shanghai). In the first year of Tongzhi (1862), he was the champion, and was successively awarded the posts of imperial academy, Walking in the South Study Room, Studying Politics in Anhui, Studying Politics in Jiangxi, Studying History in Zuodu, Shangshu in the Ministry of War, Shangshu in the Ministry of Rites, etc. There are still people called Xu in the world.
Xu, who is good at painting and calligraphy landscapes, entered the Ci Hall and was called to the south study room. Cixi often tells Xu that she is blessed. In her later years, she painted with a pen and got to know the inscription of Xu _, and Xu _' s poems are more common in the paintings handed down by Cixi. Huang commented on Xu _ Yun because of his epigraphy education: "Xu and Zhang are first-class, but Ganjia painters are far behind".
Xu has a large collection of precious stone rubbings and famous paintings. Geng's reappraisal of Zhi Yanzhai's Story of the Stone, which was compiled by Xu, was recorded in a series of talks on Pearl House.
Xu _, Kangxi champion and Qianlong champion Qin Dacheng are also called "Jiading three champions".