The Qianlong Emperor was the sixth emperor of the Manchu-led Qing dynasty, and the fourth Qing emperor to rule over China. The fourth son of the Yongzheng Emperor, his reign officially began 11 October 1735, lasting for 60 years. Named Hongli, he chose the era name Qianlong, meaning "heavenly prosperity". Although his early years saw the continuation of an era of prosperity and great military success in China, his final years saw troubles at home and abroad converge on the Qing Empire. Qianlong abdicated the throne at the age of 85, to his son, the Jiaqing Emperor, fulfilling his promise not to reign longer than his grandfather, the Kangxi Emperor.