On the 22nd of the tenth lunar month (November 5) 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.
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Trần Thị Dung was born in Lưu Gia village (now Hưng Hà, Thái Bình) as daughter of Trần Lý, leader of Trần clan who made their great fortune by fishing, and younger sister of Trần Thừa, the future first Retired Emperor of the Trần Dynasty.
A retired emperor who entered a Buddhist monastic community became a Cloistered Emperor (Japanese 太上法皇 Daijō Hōō).
The retired Emperor Kameyama continued to exercise power as cloistered emperor.