Tang Shi.
Legend has it that the monarch of Yao is called "Tang Tao". During the Zhou Dynasty, there was a small country called Tang State in today's Hubei Province. Li Yuan of Sui Dynasty inherited Tang Guogong; After Emperor Gong abdicated, he took Tang as his country name. After the demise of the Tang Dynasty, the later Tang Dynasty in Li Jianli in the Five Dynasties and the southern Tang Dynasty in the Ten Kingdoms both claimed to be the successors of the Tang Dynasty, and both took "Tang" as their country name. In fact, their emperor had nothing to do with the Tang Dynasty.
Li, a royal family in the Tang Dynasty, claimed to be from Zhao County of Han nationality, and the Li family was also a military aristocrat in Longxi. Li in Longxi was a famous family of military commanders in China during the Qin Dynasty. Li Guang, the flying general of the Western Han Dynasty, and other famous soldiers emerged in this family. However, some people doubt this statement and think that Li, the royal family of the Tang Dynasty, is a descendant of Xianbei. In Old Tang Book and New Tang Book, it is said that Li, the royal family of the Tang Dynasty, is a descendant of Lao Er, and Li Hao, the founding monarch of the Sixteen Countries, is also his distant ancestor. In the Northern Zhou Dynasty, the Xianbei policy was implemented, and Li was forced to change his "Xiao Ye surname", which was a newly created surname. After the demise of the Northern Zhou Dynasty, it was restored as Lee.
The Tang and Song Dynasties are regarded by historian Huang Renyu as the second imperial period of China after Qin and Han Dynasties, while Japanese historians generally believe that the Tang Dynasty was the end of China's "Middle Ages". The national strength of the Tang Dynasty is one of the best in the history of China, so China people are also called "Tang people".
In the heyday of the Tang Dynasty, the territory reached Anton in the east, Anxi in the Aral Sea in Central Asia in the west, northern Vietnam in the south and northern Mongolia Plateau in the north. There were many foreign nationalities in the Tang Dynasty. In order to effectively manage Turkic, Uighur, Mohong, Tiele, Shiwei and Qidan, etc. Six capitals, Anxi, Anbei, Anton, Annan, Khan and Beiting, were established.
However, in the decades after the Anshi Rebellion, a large number of border guards from Helong (mainly our troops from Longyou and Shuofang) participated in the rebellion, which led to the emptiness of border defense. Tubo took advantage of the situation and Uighur entered the Hetao grassland, greatly reducing the territory controlled by the Tang government, making it impossible to be sweet or cool west of the Yellow River. Finally, the control of the Tang Dynasty to the west of Dunhuang was completely lost. In the northeast, due to the rise of Silla, Anton Khufu has already retreated to the west of Liaohe River, and the tribes such as Qidan and Xi have become a great disaster. Tubo and Nanzhao in the southwest also caused great losses to the Tang government after the middle Tang Dynasty.
The Tang Dynasty initiated the Daofu system in the history of chinese administrative division. During the Zhenguan period in the early Tang Dynasty, the whole country was divided into 10 roads: Guannei, Henan, Hedong, Hebei, Shannan, Longyou, Huainan, Jiangnan, Jiannan and Lingnan. During the Kaiyuan period, Shannan and Jiangnan were divided into east and west, and Gyeonggi, Duji and Guizhou Middle Road were added to form a fifteen-way pattern. There are counties under the road, and there are counties under it. At the end of Kaiyuan, there were 328 counties in China, 1573 counties.