The "left-behind" official position first appeared in the Eastern Han Dynasty, and was held by a local chief, who was mainly responsible for the military and civilians, money and food and the responsibility of protecting the place.
After Yang Di ascended the throne, Li Yuan served as the county magistrate of Xingyang and Loufan, and later served as the official to Wei. In 6 15, Li Yuan was appointed to stay in Taiyuan. In addition to staying in Taiyuan, Li Yuan was also a hereditary Tang Guogong, so it can be said that Li Yuan was a vassal at that time.
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In the ancient history of China, Li Yuan, the founding emperor of the Tang Dynasty, was one of the most underestimated and neglected emperors in history. His uncle is Emperor Wendi of the Sui Dynasty, Emperor Wendi of the Great Emperor Gaozu of the Sui Dynasty, his cousin is Emperor Yang Guang of the Great Emperor Zuming of the Sui Dynasty, and his son is Li Shimin of the Great Emperor Taizong.
At the end of Sui Dynasty, Li Yuan and Li Shimin killed Wang Wei and Gao Junya, two left-behind deputies, in May and set off for Jinyang. Build a general's office, lead 30 thousand troops south with Li and others, and finally unify the whole country and establish the Tang Dynasty.
When Taiyuan went to war, there were only 30,000 people in Tang Gaozu. For Tang Gaozu, the reason why he can pacify the world with thirty thousand military forces is that he underestimated his ability.
Sandwiched among famous emperors such as Emperor Wendi, Yang Guang and Li Shimin, Li Yuan became the most underestimated founding emperor in history. However, for Tang Gaozu, a leading family, he is not the courage of the three armed forces, but at least a first-class general.
According to historical records such as the Book of the Old Tang Dynasty, Li Yuan was a descendant of Li Gui, the founding monarch of Xiliang in the Sixteen Kingdoms period, and was a nobleman for generations. Li Hu, the grandfather of Li Yuan, was an official in the Western Wei Dynasty.
When Li Yuan was seven years old, his father Li Fang died, and his attack was named Tang Guogong. Tang gaozu grew up free and easy, tolerant and generous, which is one of the reasons why he was able to gather a group of ministers and military commanders.
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