The battle for the throne in the last years of Kangxi and Yong Zhengdi's succession are hot issues in the study of the throne in Qing Dynasty, and various legends have been circulated among the people for hundreds of years. In the early 1930s, Meng Sen analyzed a large number of historical materials in the article "Examination of the Succession of Sejong in Qing Dynasty" (Three Mysteries in Early Qing Dynasty, Peking University 1935 Edition), and thought that it was a fact that Yong Zhengdi seized the throne by imperial edict. He believes that according to the intention of Emperor Kangxi, "the artifact of the future belongs to the fourteenth elder brother." This is a sign that Yong Zhengdi's inheritance problem has turned from folklore to academic research. At the same time, in the Lecture Notes on the History of the Ming and Qing Dynasties compiled by Meng Sen in the early 1930s (Zhonghua Book Company, 198 1 edition), the issue of succession to the throne in Kang Yong period was also described in detail. Since then, academic circles have formed two different views on this issue. There is a "water cloud" theory that the topic of water cloud belongs to Kangxi's later years. There are various questions about Yong Zhengdi's succession. The representative figures of this view are (textual research on Sejong Chengji in Qing Dynasty, Documentary of the Western Expedition by Yin Zhen, Miscellaneous Examination of the History of Qing Dynasty, Zhonghua Book Company, 1957 edition), Zhuang (the story of Sejong Chengji being detained on May 14th), Taiwan Province Mainland Magazine, Volume 49, No.2) and Chen Jiexian (. Yin Zhen: Prince with empty dreams, same as above, 6th place; Discussion on the taboo between Yin and non-Qing Sejong, same as above, No.8), (Relationship between Qing Sejong and Nian Gengyao), Taiwan Province Mainland Magazine, Vol. 16, No.4 and No.5; Historical materials, history and the mystery of succession, Taiwan Province 1980, Xu Zengzhong (a new exploration of Yin's succession in Qing Dynasty, the fourth series of Qing History, 1982), etc. In the article "Several Issues on the Controversy between the Reserve Position of Kangxi Dynasty and the Succession of Yongzheng" (Qing History Series 6, 1985), I put forward the view that Yin and Yun were rivals and the candidate for the reserve position was not finalized before the death of Emperor Kangxi. Later, based on the Manchu archives of Emperor Kangxi in the First Historical Archives of China, I reconsidered and changed my original view. I thought that the topic of cloud and water was written by Emperor Kangxi before his death, and I wrote a new certificate of the position of the heir to the throne as seen in Manchu archives (China Historical Research 1990 No.3) and a study of the position of the heir to the throne of cloud and water. General Fu Yuan's Memorial and Postscript by Wu (6 volumes 12) and General Fu Yuan's Annotation by Wu Fengpei (Fu Yuan's Annotation), Document Microform Center of National Library, 199 1 year. The other is the theory of Yongzheng, represented by Feng Erkang (the battle of storage in Kangxi Dynasty and the victory of Yin, Journal of the Palace Museum, 198 1 3; Textual research on the renaming of fourteen sons of Kangxi, Historical Archives, No.4,1981; The Mystery of Yongzheng's Succession, Renmin University of China Press, 1990 Edition), (Yongzheng is not a usurper-a textual research on Yongzheng's good position, Journal of Hebei University, No.2, 1983), Yang (Research on its secret folding system, Hong Kong Joint Publishing Company, 65438+. Qian Zongfan's Brief Discussion on the Reasons for Yongzheng's Prosperity (No.3 of Qing History Research Newsletter 1987) Zhang Yu's New Year's celebration of Kangxi's prosperity was due to his love for Qianlong-Yongzheng's usurpation of the throne (Journal of the Palace Museum No.0/992 1 period). Guo slandered Wu's road to power (. A book by K ang-HSI (Chinese version titled Documentary Stories of Storage Struggle in Kangxi Dynasty, translated by Zhang Zhenjiu Wu, China Social Sciences Publishing House, 1988) is a monograph on storage struggle in Kangxi Dynasty abroad, and it is considered as the legal heir. Both of the above theories involve Kang Yong's views on other major issues at that time. [Note: See Yang Zhen's Summary of the Discussion on the Succession of Yongzheng and Newsletter on the Study of Qing History 1984 1] Because there is no key archival historical data to explain the truth of Yong Zhengdi's succession, the coexistence of the two theories will continue.