Guo Xu, as a vassal state, although its national strength is weak, its achievements in history are not weak. Xu Xing, a representative of agricultural schools with many celebrities in the Warring States Period, was a famous figure named Xu who first appeared in Historical Records. There are dozens of students in the Chu people. He advocated that "sages and people cultivate food, and food is the sky", that is, everyone should work, reflecting an ideal of farmers in ancient society; In the Eastern Han Dynasty, there was a Confucian scholar and linguist, Xu Shen, who wrote Shuo Wen Jie Zi, which is the representative work of China's classical works. Commentator Xu Shao likes to comment on people. He once commented that Cao Cao was a "capable minister who managed the world and a traitor in troubled times", and later generations often followed this evaluation. During the Three Kingdoms period, there was a general in Wei State, Chu Xu, who made many contributions to Wei State and was famous for his bravery. Xu Xun, a Taoist priest in the Western Jin Dynasty, was named "Shen Gong's clever plan" in the Song Dynasty and called Xu Zhenjun; Xu Hun, a poet in the Tang Dynasty, famously said, "Rain is coming, and the wind casts its shadows over the building.". Xu Yuan, the prefect of Suiyang, stayed in An Lushan for several days and left a good reputation. Xu Daoning, a painter in the Northern Song Dynasty, is famous for his good painting of trees and landscapes. Xu Heng, the three great Neo-Confucianists in Yuan Dynasty, was handed down from generation to generation. Xu Mei and Xu Jingcheng, scholars and diplomats in the late Qing Dynasty, are also outstanding figures in Xu Shi.