Longjiang County is located in the western part of Heilongjiang Province, located in the transition zone of Daxingan Lingnan and Songnen Plain. It is one of the earlier counties in Heilongjiang Province. It is known as the "first county in Jiang Province" and is the hometown of the aerospace hero Zhai Zhigang. The area is 6,175 square kilometers, covering 8 towns and 6 townships, 158 administrative villages, 1,080 natural villages, and 4 state-owned forest farms with a total population of 620,000. Longjiang County is a large county producing grain, a large county for livestock breeding in the province, an ecological barrier in the northern Songnen Plain, and a regional trading center for agricultural and sideline products processing at the intersection of Heijimeng three provinces and regions.