Battle of Th??X??ng river in between Tây S?n and Qing army in December, 1788 In 1771, the Tây S?n revolution broke out in Quy Nhon, which was under the control of the Nguy?n lord.[111] The leaders of this revolution were three brothers named Nguy?n Nh?c, Nguy?n L?? and Nguy?n Hu?? not re