Nguyễn Nhạc
The Tây Sơn leader Nguyễn Nhạc invited Tiep to help him under the name of the Nguyễn prince Nguyen Phuc Duong and Tiếp agreed. Shortly thereafter, Tiếp defected from the Tây Sơn army and joined the Nguyễn lords. The Nguyễn governor of Long Ho appointed him the governor of Phú Yên and Bình Thuận.