During the prosperous period of the Tang Dynasty, the world was prosperous, and all nations came to court. The carriages and horses on Zhuque Street in Chang'an City were like dragons, and the Hu and Han Dynasties were mixed in the cities and towns, and there were many things going on. Although there were lingering Turkic troubles in the border areas and wars in the Western Regions from time to time, the military system of the government was at its peak, with powerful military governors and numerous generals. The three provinces and six ministries of the imperial court were operating in an orderly manner, the imperial examination was gradually gaining popularity, and even poor families could become officials based on their talents. Buddhism and Taoism go hand in hand, poetry and wine flow, Li Bai sings drunkenly, Du Fu cares about the people, and the culture is splendid. However, the Anshi Rebellion suddenly broke out, the feudal system began to emerge, and the country was in danger. At this time, it was difficult to find a good general, but there was only one person who came from an official background, was proficient in the art of war, had a lot of weapons, was calm in the face of danger, calmed down the world with loyalty and courage, and rebuilt the Tang Dynasty. This person was Guo Ziyi. He lived through seven emperors in his life, held the military power of the world without overstepping his authority, had great achievements that shocked his master but did not doubt his ruler, and had a prominent family yet remained humble and self-reliant. He could be called a perfect man through the ages.
