Introduction to the Halaha River (the border river between China and Mongolia): is known as the "Mother River". It originates from the northern Motian Ridge of Aershan, passes through volcanic lava areas in its upper reaches, and flows westward in the forest sea. It reaches the Handaganan and Amgulangnan in Xinbarhuzuo Town and becomes the Sino-Mongolian boundary river. It flows to Mongolia and then flows into Lake Baikal then turns into Lake Hulun. The river has a total length of 399 kilometers and flows for 154 kilometers in the Aershan. , the river width ranges from more than ten meters to tens of meters. Both sides of the bank are overgrown with weeds and the vegetation is intact, creating a vibrant scene.