The Qiánlóng Emperor qian2long2 (25 September 1711 - 7 February 1799), also known by his temple name Emperor Gāozōng of Qing, personal name Hongli, was the fifth emperor of the Qing and the fourth Qing emperor to rule over China proper. The fourth son of the Yongzheng Emperor, he reigned officially from 11 October 1735 to 8 February 1796. In 1796, he abdicated in favour of his son, the Jiaqing Emperor, out of filial piety towards his grandfather, the Kangxi Emperor, who ruled for 61 years, so that he not officially usurp him as the longest-reigning emperor. Despite his retirement, however, the Qianlong Emperor retained ultimate power as the Emperor Emeritus until his death in 1799, making him one of the longest-reigning monarchs in history as well as one of the longest-lived, having died at the age of 87. He was respected as the "Emperor Manjushri" (文殊皇帝) by Tibetans.
As a capable and cultured ruler who inherited a thriving empire, Qianlong ushered in the High Qing era, which was the height of Qing dynasty power, influence, and prosperity. During his long reign, the empire had the largest population and economy in the world. As a military leader, he led military campaigns expanding the dynastic territory to the largest extent by conquering and sometimes destroying Central Asian kingdoms. This turned around in his late years: the Qing empire began to decline with corruption and wastefulness in his court and a stagnating civil society.
Hongli was the fourth son of the Yongzheng Emperor and was born to Noble Consort Xi. Hongli was adored by both his grandfather, the Kangxi Emperor, and his father, the Yongzheng Emperor. Some historians argue that the main reason why the Kangxi Emperor appointed the Yongzheng Emperor as his successor was because Hongli was his favorite grandson. He felt that Hongli's mannerisms were very similar to his own. As a teenager, Hongli was capable in martial arts and possessed literary ability.
After his father's enthronement in 1722, Hongli was made a qinwang (first-rank prince) under the title "Prince Bao of the First Rank" ().