 Complete the following phrase:  A civil war broke out between Nguyễn Nhạc and Nguyễn Huệ in 1787, he joined Nhạcs side. Huệ besieged Quy Nhơn, he led the main forces to support Nhạc. Getting the information, Nguyễn Ánh returned to Vietnam. Chân was defeated and captured by Huệ, and later surrendered to Huệ. After the 