Yuntang, born Yintang, was a Manchu prince of the Qing dynasty. He was the ninth son of the Kangxi Emperor and an ally of his eighth brother Yunsi, who was the main rival to their fourth brother Yinzhen in the power struggle over the succession. In 1722, Yinzhen succeeded their father and became historically known as the Yongzheng Emperor, after which he started purging his former rivals. In 1725, the Yongzheng Emperor stripped Yuntang off his beizi title, banished him from the Aisin Gioro clan, and imprisoned him in Baoding. Yuntang died under mysterious circumstances later. In 1778, the Qianlong Emperor, who succeeded the Yongzheng Emperor, posthumously rehabilitated Yuntang and restored him to the Aisin Gioro clan.

The Kangxi Emperor, also known by his temple name Emperor Shengzu of Qing, personal name Xuanye, was the third emperor of the Qing dynasty, and the second Qing emperor to rule over China proper, reigning from 1661 to 1722. His reign of 61 years makes him the longest-reigning emperor in Chinese history and one of the longest-reigning rulers in history. He is considered one of China's greatest emperors.