Xu Yougong (64 1-702), whose real name is Hong Min and Yu Youren, was born in Liqinglong, Jiyuan, Tanghe, and was famous for his Confucian classics in his youth. Justice after joining the army, such as Sicheng (Dali), Langzhong (Qiu Guan), Shi, (Dali), etc. Long-term judicial appointment is a banner of the struggle against cruel officials in the period of Wu Zetian in the Tang Dynasty, and it is also a rare judge and honest official who abides by the law and upholds justice with his death. "New Tang Book" praised him as "unparalleled though he is ten years younger". After his death, Wu Zetian posthumously awarded him the title of Minister of Dali Temple. After Tang Zhongzong's Li Xian ascended the throne, he was named as the secretariat of Yuezhou (Grade I), and wrote a special book in recognition: "Being chaste, respectful, loyal to the aspirations of the ancients, he is really a generation of sages" and "abiding by the law, although not moving." There is no unyielding heart, there is a discussion of loyalty and righteousness. "