The Tang Dynasty (6 18-907) was a unified Central Plains dynasty after the Sui Dynasty, with a total of 2 1 emperor and enjoyed the country for 289 years.
At the end of the Sui Dynasty, the world was in harmony. In 6 17, Tang Guogong and Li Yuan set out in Jinyang. The following year, he proclaimed himself emperor, established the Tang Dynasty and made Chang 'an his capital. In 658, Luoyang, the eastern capital, was established, and then Taiyuan, Chengdu, Nanjing and Fengxiang, the northern capitals, were successively added. After Emperor Taizong succeeded to the throne, he initiated the rule of chastity and laid the foundation for the prosperous Tang Dynasty. Tang Gaozong inherited Zhenguan's legacy and initiated the "rule of eternal emblem".
In 690, Wu Zetian changed the title to Zhou, and after the Dragon Revolution in 705, the title of Tang Dynasty was restored. After Emperor Xuanzong of the Tang Dynasty ascended the throne, he created a prosperous new century. At the end of Tianbao, the national population reached about 80 million. After the Anshi Rebellion, the vassal regime became independent, and the eunuchs monopolized power, which led to the gradual decline of national strength.
In the middle and late period, it was revived by Tang Xianzong Yuanhe Zhongxing, Tang Wuzong Huichang Zhongxing and Tang Xuanzong Dazhong. The Huang Chao Uprising broke out in 878, which destroyed the foundation of the Tang Dynasty. In 907, Zhu Wen usurped the Tang Dynasty and the Tang Dynasty perished.
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In the later years of Emperor Taizong, Prince Li Chenggan and Mrs. Wang competed for the throne, but both of them were abolished, and Li Zhi, the ninth son of Jin Dynasty, was made Prince. In the 23rd year of Zhenguan (649), Tang Gaozong Li Zhi acceded to the throne.
After Li Zhi acceded to the throne, he announced to his ministers: "If something is inconvenient for the people, learn from it, or seal it if it is not finished. On that day, the secretariat entered the cabinet and asked the people about their sufferings; Emperor Taizong instructed him to be frugal, and Tang Gaozong immediately ordered him: "Anyone who offers eagles, dogs and horses to Beijing officials and other states is guilty. " ?
The princes and ministers of Tang Gaozong followed the instructions of Emperor Taizong. Therefore, during the Yonghui period, the border was stable, the people were in Fuan, and there was a legacy of Zhenguan, which was called "the rule of Yonghui" in history. ? During his reign, the territory of the Tang Dynasty was the widest.
During the reign of Emperor Gaozong, the population increased from less than 3 million in Zhenguan to 3.8 million.
Baidu Encyclopedia-Tang Dynasty