In the 13th year of Kangxi (1674), the one-year-old second son of Emperor Kangxi, born to the queen, became a prince, but he was abandoned decades later because of his own quality problems and his affiliation with North Korea. After the abolition of the prince, the princes coveted the throne, and the contradiction became more acute. Therefore, the prince was abolished and re-established, but Kangxi still could not tolerate his cronyism and abolished the prince three years later. Finally, it was spread to Yin Zhen, the fourth son of Emperor Kangxi, when he was dying in 6 1 year. There have always been different opinions about the reasons why Kangxi was sent to Yin Zhen. Some people think that Kangxi hoped that Yin Zhen, who was smart and capable, could vigorously reform the indulgence and accumulated abuses in the last years of Kangxi. Some people think that Kangxi was transferred to Yin Zhen because he liked his son Li Hongcai. There is also a legend that the ministers of life, Ronkedo and Yin Zhen, usurped the testamentary edict, so there is a legend that "the fourteenth prince turned to the fourth prince". However, according to the analysis of the secret archives of the Qing Dynasty, the traditional Chinese characters of testamentary edicts are quite different from each other. This is a misunderstanding.