Prince Yong ascended the throne as the Yongzheng Emperor in 1722, and the Residence of Prince Yong of the First Rank was later promoted into the 'Palace of Peace and Harmony' (雍和宫). After the Yongzheng Emperor's death in 1735, his coffin was placed in the temple from 1735 to 1737. Before the Yonghe Temple was converted into a monastery, the Grand Secretariat Ortai had once proposed that Hongzhou (Prince He) should take the Yonghe Palace as his private residence, but this suggestion was denied by the Qianlong Emperor. The Qianlong Emperor, who succeeded the Yongzheng Emperor, gave the temple imperial status signified by having its turquoise tiles replaced with yellow tiles which were reserved for the emperor. In 1744, the Qianlong Emperor issued an edict of converting the Palace of Peace and Harmony into a lamasery, and the following Buddhābhiṣeka (开光 Kaiguang) of the Buddhist figure was executed in 1745.