 During his reign, the emperor had one more era name, which was Bảo Phù (寶符, 1273–1278).Although passing the throne to his son, Thái Tông continued to rule the country with Thánh Tông in the position of Retired Emperor () from 1259 to his death in 1277.After the enthronement, Thánh Tông and his father began to rehabilitate both the country's economy and administrative system, which had been heavily damaged by the Mongol invasion and the troubled time at the end of the Lý dynasty.