 His father, Tridu Songtsen, died in 704 in battle in Mywa territory in the Kingdom of Nanzhao (, modern lowland Yunnan).The "Old Book of Tang" states he was on his way to suppress tributary kingdoms on the southern borders of Tibet, including Nepal and parts of India.There was a dispute among his sons but "after a long time" the people put seven-year-old Tridé Tsuktsen on the throne.