Why did Obai's usurpation of the throne end in failure? Did Kangxi's imperial edict truly pass the throne to the fourth son of the emperor, Yinzhen? ... This article uses the form of a diary to fully demonstrate the inner thoughts of the three generations of the Kangxi, Yongzong and Qianlong dynasties, telling the funny historical facts about the Kangxi, Yongzong and Qianlong years!