In the later years of Kangxi's reign, many princes coveted the throne, with the most intense conflict between the fourth prince Yinzhen and the fourteenth prince Yingui. Kangxi pre established a secret edict to pass on the position of the 14th son. Yin Zhen then ordered Nian Gengyao to try to usurp the position of the 14th son, and Yin Zhen later held the position of Grand General. After helping Yongzheng win the throne, he was ordered to embark on a westward expedition and was invincible, gaining widespread fame. Yongzheng cited
In the later years of Kangxi's reign, many princes coveted the throne, with the most intense conflict between the fourth prince Yinzhen and the fourteenth prince Yingui. Kangxi pre established a secret edict to pass on the position of the 14th son. Yin Zhen then ordered Nian Gengyao to try to usurp the position of the 14th son, and Yin Zhen later held the position of Grand General. After helping Yongzheng win the throne, he was ordered to embark on a westward expedition and was invincible, gaining widespread fame. Yongzheng cited