Malan Red Mountain Military Expo Park is located in Bayin'guoleng Mongol Autonomous Prefecture, Heshuo County. Malan was one of the research centers of China's nuclear test base in the 1960s and the command center of the army, with many military relics, and is a memorial site for the development of the "two bombs". In Malang Red Mountain Military Park, many important residences and workplaces still maintain their original appearance. The 300-meter-long artificial air-raid tunnel reveals the mystery and hardship of nuclear testing. It is not always open and is only accessible on certain days.