Fight of Th�?Xương river involving Tây Sơn and Qing army in December, 1788 In 1771, the Tây Sơn revolution broke out in Quy Nhon, which was under the control of the Nguyễn lord.[111] The leaders of this revolution were three brothers named Nguyễn Nhạc, Nguyễn L�? and Nguyễn Hu�? not associated with the Nguyễn lord's loved on