1, Tang Gaozu → Li Yuan, reigned for 9 years, Jinyang rose, established the Tang Dynasty, and Xuanwu Gate changed.

2. Emperor Taizong → Li Shimin, who was in office for 23 years, reformed three provinces and six departments, and ruled by Zhenguan, which is a model of wise kings in history.

3. Tang Gaozong → Li Zhi, who reigned for 34 years, initiated the rule of Yonghui and feared his wife, reaching the largest territory in the Tang Dynasty.

4. Empress → Wu Zetian, who ascended the throne in 15 and acceded to the throne at the age of 67, is the only orthodox female emperor in the history of China.

5. Tang Zhongzong → Li Xian, twice in office for five years, was poisoned by three women all his life, and later by Wei Hou.

6. Tang Ruizong → Li Dan, who ascended the throne twice, lasted for 8 years, experienced a dozen official coups, and later became a Zen master, Emperor Xuanzong of the Tang Dynasty.

7. Emperor Xuanzong of the Tang Dynasty → Li Longji, who reigned for 44 years, started the prosperity of Kaiyuan, but was later destroyed by Yang Guifei's favor, and favored treacherous officials, leading to the Anshi rebellion.

8. Tang Suzong → Jaz Li, who reigned for seven years, was a troubled son of heaven who died in a palace coup.

9. Tang Daizong → Li Yu, 17 years in office, put down the Anshi Rebellion, superstitious Buddhism, and the Tang Dynasty began to decline from prosperity.

10, Tang Dezong → Shi Li, who has been in office for 26 years, has withstood the baptism and test of war and fire, and their lives are full of contradictions and tragedies.

1 1, Tang Shunzong → Li Yong, who was in office for 8 months, was forced to abdicate by eunuchs and became the emperor's father. He didn't spend the New Year as an emperor.

12, Tang Xianzong → Chun Li, and 15 became the emperor, creating the last prosperous emperor of the Tang Dynasty.

13, Tang Muzong → Hengli, reigned for five years, did not know what was going on in the world, and died in his bedroom. Three of his five sons became emperors.

14, Tang Jingzong → Li Zhan, reigned for 2 years, only playing with the harem, extravagant and dissolute, and was killed by eunuchs at the age of 18.

15, Tang Wenzong → Li Ang, 14 in place. During the transitional period of the Tang Dynasty, they were like puppets, and finally died of depression.

16, Tang Wuzong → Li Yan, in office for 6 years, demolished Buddhist temples and confiscated a lot of temple land, which created a short revival in the Tang Dynasty.

17, Emperor Xuanzong of the Tang Dynasty → Li Chen, ascended the throne in 13, and returned to Longgui, ruled by Dazhong, and was called Little Taizong.

18, Tang Yizong → Cui Li, 14 years in office, unknown, welcoming Buddha's bone. The Tang Dynasty was incompetent and fatuous.

19, Tang Xizong → Li Xian, 13 years in office, playing with the puppet emperor in the hands of an exhausted eunuch.

20. Tang Zhaozong → Ye Li, 16 years in office, eradicated Yang Fuguong's forces, marched eastward to Xichuan Hedong Fanzhen, and was assassinated.

2 1, Tang Aidi → lizhu, reigned for 3 years, and was killed the following year at the age of 17.