Trần Thái Tông

[1][2] According to a Chinese writer, Zhou Mi (1232–1298), Trần Nhật Cảnh's real name was Hsieh Sheng-ch'ing, "a man from Qinglo district in Fujian".

[3][4][5] Trần Cảnh (陳 煚) was born in 1218 in modern-day Nam Định province during the last years of the Lý.

During his reign Trần Thái Tông used three era names: Kiến Trung (1225–1232), Thiên Ứng Chính Bình (1232–1250) and Nguyên Phong (1251–1258).

In the autumn of 1257, Mongol general Uriyangkhadai addressed three letters to Trần Thái Tông demanding passage through to southern China in order to attack the Song dynasty.

The Vietnamese senior leaders were able to escape on pre-prepared boats while part of their army was destroyed at No Nguyen (modern Viet Tri on the Hong River).

The remainder of the royal army again suffered a major defeat in a fierce battle at the Phu Lo bridge the day after.

At that time, Princess Thuận Thiên, Trần Liễu's wife, had been pregnant with Quốc Khang for 3 months.

Trần Thủ Độ and his wife princess Thiên Cực advised the emperor to arrogate the pregnancy to himself to maintain the continuity of the dynasty.