Daxinganling, located in Heilongjiang Province and the northeast of Inner Mongolia Autonomous Region, is the watershed between Inner Mongolia Plateau and Songliao Plain. It starts from Heilongjiang in the north and reaches the upper reaches of Xilamulun River in the south, showing a northeast-southwest trend. Total length 1, more than 200 kilometers, width 200-300 kilometers, altitude 1, 654,38+0,400 meters, the main peak is Soyurki Mountain.

Xiaoxing 'anling is a low hill and mountainous area in the northeast of Northeast China, which is the general name of the mountainous area north of Songhua River. Located in the north-central part of Heilongjiang Province, China. The west confronts Daxinganling, also known as "Dongxing Anling" and "Bulun Mountain". The northwest of the mountain, from Ilhuli Mountain, a branch of Daxing 'anling, to the north end of Zhangguangcailing on Songhua River in the southeast, is the watershed between Heilongjiang and Songhua River. It is about 450 kilometers long from north to south, 2 10 kilometers wide from east to west and covers an area of 77,725 square kilometers.

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