The Prince of Gui (桂王) or the Yongli Emperor, was an emperor of the Southern Ming Dynasty in China. He was the last surviving Southern Ming emperor who lived long enough to see the collapse of the last vestiges of the Ming dynasty in mainland China. Born Zhu Youlang (朱由榔) sometime in 1623, to Zhu Changying(朱常瀛), the son of the Chongzhen emperor, who hanged himself 1n 1644 when the Qing invaded Beijing. The Yongli emperor, who is commonly known as The Prince of Gui, actually inherited this title from his brother.

At the age of 21 on th 18th November 1646, the young Prince ascended the throne and assumed the reign name of Yongli. He initially established himself in Guangzhou, the capital of Canton, but in as the Ming troops were unable the stronger Qing troops who were continuously heading further South towards Canton, the Yongli emperor had no choice but to flee in 1650 from Guangzhou towards Nanning in order to save his life. However, as Wu Sangui's troops exerted a further pressure against his at that time current location, the Prince of Gui eventually retreated to Kunming in Yunnan in 1659 and into Burma in 1661, seeking refuge from the Burmese King.

The Burmese king, however, was feeling frightened that he will also lose his own kingdom as well if he continously offered the Price of Gui further protection. Having no choice, the King let in Wu Sangui's troops and let them arrest the Prince of Gui. In the process, most of his concubines and Eunuchs, and along with the small army, were either killed while defending him or they had ran away. The Prince of Gui was finally strangled to death by Wu Sangui in April 1662.