Which son did Emperor Kangxi of Qing Dynasty like?

There is no doubt that it is the waste prince Yin Ren. First, Yin Mi was born to Emperor Kangxi and Empress Hershey, who were childhood friends. Yin Mi is not only the youngest son, but also loved because of the deep friendship between mother and father. Secondly, Hershey is the granddaughter of Sony and the daughter of Soetu. Sony and Suodetu contributed to Kangxi's stable position, so Kangxi naturally paid attention to Yin Ren. Third, Yin Yong was smart and studious since childhood, and his mother died in childbirth, so Kangxi's affection for Hershey naturally shifted to Yin Yong. Fourth, Yin Yong is the only Crown Prince in history of qing dynasty, and Kangxi has made two contributions for him, which shows his love.