Longgu Mountain is also known as Jiayin Longgu Mountain. Jiayin Longgu Mountain is located on the right bank of Heilongjiang Province in Xiyin County, about 10 kilometers southwest of the county seat. Longgu Mountain is located 12 kilometers west of Jiayin County. The right bank of Heilongjiang River stands next to the river. It is named after the rich fossils of dinosaurs buried.