Yunzhi, Prince Cheng
Yinzhi (23 March 1677 – 10 July 1732), also known as Yunzhi, was a Manchu prince of the Qing Dynasty. Biography Yinzhi was born of the Manchu Aisin Gioro clan as the third son of the Kangxi Emperor. His mother was Consort Rong (榮妃; d. 28 March 1727) from the Magiya clan and was the daughter of Gaishan (蓋山), who served as an Imperial Examination Examiner (員外郎). Yinzhi was granted the title of "Prince Cheng of the Second Rank" (誠郡王) in 1698. Yinzhi was known to be studious as a child and was versed in literary arts. His talents earned him the appreciation of his father. French Jesuit Joachim Bouvet once mentioned in a letter to King Louis XIV that the Kangxi Emperor personally taught Yinzhi geometry. When the Kangxi Emperor opened a school in Changchun Gardens (暢春園), he placed Yinzhi in charge of compiling a book titled Lü Li Yuan Yuan (律歷淵源), which included the shi-er-lü, calendrical calculations, and mathematics. Yinzhi was also known for his skill in calligraphy, and was tasked with writing the inscriptions on the memorial tablet at the Kangxi Emperor's tomb in Jingling Mausoleum, Eastern Qing Tombs. Yinzhi showed little interest in the conflict among