Introduction to Shangbao Crystal Mine: Shangbao Sulfur Mine is located 1 km south of the visitor center. It is the most famous fluorite crystal origin in the world. There are a large number of rare and exotic stones in the mine, which is unparalleled in the world. The stones in the cave were formed over a long time, are rare in the world, and are famous internationally. The ores have unique shapes and unique characteristics, and are of great collection value. Many private geological museums in Europe and the United States have collections of strange stones from this mine. Visitors can take a sightseeing train and go deep into the 2-kilometer-long mine to learn about the geological knowledge of ore formation. There is a mine museum built outside the mine for tourists to watch and learn about crystal minerals.