It's about flying general Li Guang. Li Guang, a native of Ji Cheng (now south of Jingning County, Gansu Province), was a famous general in the Western Han Dynasty. There is a special biography about Shi Yun in the volume 109. Li Guang was born in a military commander's family. When Emperor Wen of the Han Dynasty, he was appreciated by the emperor for his meritorious service in fighting against Xiongnu. When he was in Jingdi, he served as the magistrate of several northern border counties, repelling the enemy with clever tactics and showing the demeanor of a military commander. Emperor Wu ascended the throne and was called Weiyang Weiwei. Later, when the right Beiping was the satrap, the Xiongnu heard the news and dared not attack for several years, calling it "Flying General". However, in the Battle of Mobei, Li Guang lost his way, failed to complete the task, and committed suicide by swallowing his voice. Li Guang has been through many battles all his life, and made great contributions to maintaining the security of the Han border and the rule of the dynasty. His heroic spirit of serving the country and bravely killing the enemy has made future generations admire him. Sima Qian praised Li Guang's moral integrity by saying, "No matter what peaches and plums are, we should learn from others.". "The bright moon in the Qin Dynasty, the retreat in the Han Dynasty, and the Long March did not return. But make Longcheng fly, and don't teach Huma to cross Yinshan. " This famous poem by Wang Changling, a poet in the Tang Dynasty, is widely circulated and we are all familiar with it. The "Flying General in Dragon City" mentioned in the poem is the famous "Flying General" Li Guang in history. People who have seen the Water Margin may remember that among the 100 single and eight generals in the Water Margin, there is an archer who is good at riding a fierce horse and can "pierce the Yang with a hundred paces". His name is Huarong, nicknamed "Xiao Liguang". Source: Harle.