Become the eldest legitimate son or eldest son of one of the following emperors.
1. Qin Shi Huang Ying Zheng 2. Ming Taizu Zhu Yuanzhang 3. Tang Taizong Li Shimin 4. Han Wudi Liu Che 5. Ming Chengzu Zhu Di
6. Qing Shengzu Kangxi 7. Wu Zetian 8. Han Gaozu Liu Bang 9. Wei Wudi Cao Cao 10. Song Taizu Zhao Kuangyin
11. Qing Gaozong Qianlong 12. Sui Wendi Yang Jian 13. Yuan Shizu Kublai Khan 14. Tang Xuanzong Li Longji 15. Han Wendi Liu Heng
16. Han Xuandi Liu Xun 17. Ming Wuzong Zhu Houzhao 18. Song Gaozong Zhao Gou 19. Chongzhen Emperor Zhu Youjian 20. Qing Shizong Yongzheng
21. Han Guangwudi Liu Xiu 22. Song Taizong Zhao Guangyi 23. Han Zhaoliedi Liu Bei 24. Ming Xuanzong Zhu Zhanji 25. Song Renzong Zhao Zhen
26. Genghis Khan Temujin 27. Jin Gaozu Sima Yi 28. Sui Yangdi Yang Guang 29. Ming Shenzong Wanli 30. Qing Chengzong Dorgon
Rank higher than their original heirs, and you can replace them.
