陳聖宗
On the 22nd of the tenth lunar month (November 8) 1278, Trần Thánh Tông decided to cede the throne to the Crown Prince Trần Khâm, now Trần Nhân Tông, and held the title Retired Emperor. After the coronation, Nhân Tông changed the era name to Thiệu Bảo (紹寶, 1278–1285), during his reign, the emperor had one more era name which was Trùng Hưng (重興, 1285–1293). Although passing the throne to his son, Thánh Tông continued to co-rule the country with Nhân Tông from 1279 to his death in 1290.