Introduction to the Department of Natural Resources: The large-scale cast copper inlaid relief wall in the Department of Natural Resources generally shows the natural ecological environment of the Greater Khingan Mountains. There are large fossils of mammoths and a catfish with a body length of 235 centimeters and a weight of 109 kilograms. Fish specimens include biological resources such as sable, mink, musk deer, brown bear, lynx, golden eagle, black-billed grouse, white stork, and red-crowned crane, as well as rich mineral deposits such as mica, huge gold nuggets, iron ore, and copper ore. There are also well-protected ecosystems such as birch island forest wetland, glacial lake wetland, and thermal swamp wetland.