 Trần Thái Tông was enthroned when he was only an 8-year-old boy and there were several revolts in Đại Việt at that time, so Trần Thủ Độ had to devote all of his efforts to consolidating the rule of the new Emperor in the royal court and over the country.Right after the coronation of the Emperor in 1226, Nguyễn Nộn and Đoàn Thượng rose a revolt in the mountainous region of Bắc Giang and Hải Dương, by both military and diplomatic measures such as sending army to pacify them or even awarding two leaders of the revolt by the title Prince (Vương), Trần Thủ Độ was able to put down this revolt in 1229.According to "Đại Việt sử kí toàn thư", Thái Tông and his wife, the Empress Chiêu Thánh, did not have their first son for a while, so this situation in the royal family made grand chancellor Trần Thủ Độ worried because he had profited in the same circumstances of the Emperor Lý Huệ Tông to overthrow the Lý Dynasty.