Introduction to underground treasures: "Underground Treasures" is located in Exhibition Hall 3 on the second floor of the museum, covering an area of ​​about 1,000 square meters. It is composed of three units: "Beautiful Home", "Rich Mineral Deposits" and "Sustainable Development". The exhibition hall displays various precious metal minerals, non-metallic minerals, energy minerals and non-ferrous metal minerals that are abundant in Inner Mongolia, presenting the rich geological resources in Inner Mongolia.