Tang Dynasty Emperors, in chronological order

Criteria: He is an important character in the drama/movie, or the story contains a major historically event during his reign.

1. Li Yuan 李渊 || Temple name: Gaozu 高祖

2. Li Shimin 李世民 || Temple name: Taizong 太宗

3. Li Zhi 李治 || Temple name: Gaozong 高宗

4. Li Xian 李显 (李哲) || Temple name: Zhongzong 中宗

5. Li Dan 李旦 (李旭轮/李轮) || Temple name: Ruizong 睿宗

6. Wu Zetian 武则天 (Wu Zhao 武曌)

7. Li Chongmao 李重茂 || Posthumous name: Shang 殇

8. Li Longji 李隆基 || Temple name: Xuánzong 玄宗

9. Li Hēng 李亨 (李嗣升/李浚/李玙) || Temple name: Suzong 肃宗

10. Li Yu 李豫 (李俶) || Temple name: Daizong 代宗

11. Li Kuo 李适 || Temple name: Dezong 德宗

12. Li Song 李诵 || Temple name: Shunzong 顺宗

13. Li Chun 李纯 (李淳) || Temple name: Xianzong 宪宗

14. Li Héng 李恒 (李宥) || Temple name: Muzong 穆宗

15. Li Zhan 李湛 || Temple name: Jingzong 敬宗

16. Li Ang 李昂 (李涵) || Temple name: Wenzong 文宗

17. Li Yan 李炎 (李瀍) || Temple name: Wuzong 武宗

18. Li Chen 李忱 (李怡) || Temple name: Xuānzong 宣宗

19. Li Cui 李漼 (李温) || Temple name: Yizong 懿宗

20. Li Xuan 李儇 (李俨) || Temple name: Xizong 僖宗

21. Li Ye 李晔 (李杰/李敏) || Temple name: Zhaozong 昭宗

22. Li Zhu/Chu 李柷 || Posthumous name: Ai 哀

(Why tf do they all like changing their legal names so much. Smh.)