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 the revolution were being a few brothers named Nguy?n Nh?c, Nguy?n L?? and Nguy?n Hu?? not connected to the Nguy?n lord's spouse and children. In 17