The Tang Dynasty existed for 289 years. The Tang Dynasty (6 18-907) was a unified Central Plains dynasty after the Sui Dynasty, with a total of 2 1 emperor, enjoying the dynasty for 289 years. At the end of the Sui Dynasty, the world was in harmony. In 6 17, Li Yuan, Duke of the Tang Dynasty, set out for Jinyang. The following year, he proclaimed himself emperor and established the Tang Dynasty, with Chang 'an as his capital. 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".

How many years did the Tang Dynasty exist? The Tang Dynasty existed for 289 years.

The Tang Dynasty (6 18-907) was a unified Central Plains dynasty after the Sui Dynasty, with a total of 2 1 emperor, enjoying the dynasty for 289 years.

At the end of the Sui Dynasty, the world was in harmony. In 6 17, Li Yuan, Duke of the Tang Dynasty, set out for Jinyang. The following year, he proclaimed himself emperor and established the Tang Dynasty, with Chang 'an as his capital. 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 and reached the peak of the Tang Dynasty. At the end of Tianbao, the national population reached about 80 million. After the Anshi Rebellion, separatist regimes and eunuch dictatorship appeared one after another, and the national strength gradually declined. After the rule of Tang Xianzong Yuanhe Zhongxing, Tang Wuzong Huichang Zhongxing, and Tang Xuanzong Dazhong, the situation in the whole country became turbulent again. The Huang Chao Uprising broke out in 878, which destroyed the ruling foundation of the Tang Dynasty. In 907 AD, Zhu Wen, the general of the buffer region, usurped the Tang Dynasty and the Tang Dynasty perished.

Tang Gaozu Li Yuan → Tang Taizong Li Shimin → Tang Gaozong Li Zhi → Tang Zhongzong Li Xian → Tang Ruizong Li Dan → Wu Zetian → Tang Xuanzong Li Longji → Tang Suzong Li Heng → Tang Xuanzong Li Yu → Tang Dezong Li Yong → Tang Xianzong Li Chun → Tang Muzong Li Heng → Tang Jingzong Li Zhan → Tang Wenzong Li Ang → Tang Wuzong Li Yan → Tang Xuanzong Li Chen → Tang Yi.

There were several prosperous periods in the Tang Dynasty. There were two prosperous times in the Tang Dynasty: Emperor Taizong and Li Shimin ruled Zhenguan; Li Longji's Kaiyuan Prosperity in Xuanzong Period of Tang Dynasty.

1. Zhenguan rule was the ruling situation of political clarity, economic recovery and cultural prosperity in the early years of Emperor Taizong. Emperor Taizong inherited Tang Gaozu's national policy of respecting ancestors and worshipping Taoism, and further developed it, ruling the country and leveling the world with Taoist thought.

Emperor Taizong can be honest and make good use of others. Speak freely, respect life, exercise self-restraint, and be open-minded to teach; And adopted policies such as taking agriculture as the foundation, practicing economy, recuperating, reviving culture and education, and perfecting the imperial examination system, which made the society stable.

And vigorously pacify foreign aggression, respect border ethnic customs, stabilize the border areas, and finally achieve the ideal situation of governing the world. Because the year number at that time was "Zhenguan" (627-649), it was called "Zhenguanzhi" in history.

The rule of Zhenguan laid an important foundation for the prosperity of Kaiyuan and pushed China's traditional agricultural society to its peak.

Thanks to a series of positive measures taken by Emperor Xuanzong of the Tang Dynasty and the hard work of the broad masses of the people, the Tang Dynasty ruled the world and the economy developed rapidly. The Tang Dynasty here reached a very high level in all aspects, with unprecedented national strength, unprecedented social and economic prosperity and a substantial increase in population. During the Tianbao period, the population of the Tang Dynasty reached 80 million, and the national fiscal revenue was stable.

Commerce is very developed, domestic transportation extends in all directions, cities are more prosperous, foreign trade is growing day by day, Persia and big food merchants are in an endless stream, and businessmen from Chang 'an, Luoyang, Guangzhou and other metropolises gather, and businessmen from different languages come and go in different clothes, which is very lively.

The Tang Dynasty entered its heyday, and the feudal society in China reached its peak. Because the year number at that time was "Kaiyuan", it was called "Kaiyuan Shi Sheng" in history.