Fight of Th�?Xương river in between Tây Sơn and Qing Military in December, 1788 In 1771, the Tây Sơn revolution broke out in Quy Nhon, which was beneath the Charge of the Nguyễn lord.[111] The leaders of this revolution were being three brothers named Nguyễn Nhạc, Nguyễn L�? and Nguyễn Hu�? not connected to the Nguyễn lord's