The river first flows for several hundreds of kilometers toward the east and southeast, along the southern side of the Amne Machin Range, crossing the entire length of Golog Prefecture, and reaching the borders of Gansu and Sichuan.
The river first flows for several hundreds of kilometers toward the east and southeast, along the south-western side of the Amne Machin Range. In so doing it crosses the entire length of Golog Prefecture, and reaches the borders of Gansu and Sichuan.