Quang Trung called Trần Quang Diệu back to Phú Xuân. He set a schedule to move the capital to Phượng Hoàng trung đô (present-day Vinh) together with high ministers. At this time, he got the information that Nguyễn Ánh had captured Bình Thuận, Bình Khang (modern Ninh Hòa) and Diên Khánh. He was depressed, and soon became critically ill. On his deathbed, Quang Trung was worried about the future of Tây Sơn dynasty. He described the Crown Prince Nguyễn Quang Toản as "a clever boy but too young", described Nguyễn Nhạc as "an old man who is resigned to the present state of affairs". His will instructed that he be buried within a month; all ministers and generals should be united as one to assist the Crown Prince; and move the capital to Phượng Hoàng trung đô as soon as possible. If not, one day all of them will be killed by Nguyễn Ánh.
