Struggle 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 beneath the Charge of the Nguy?n lord.[111] The leaders of this revolution have been 3 brothers named Nguy?n Nh?c, Nguy?n L?? and Nguy?n Hu?? not related to the Nguy?n lord's relatives. In 1773, Tây S?n