Introduction to the air-raid shelter: The air-raid shelter was built in 1933. It has supporting air defense safety measures and is an early model building in the history of the People's Air Defense of the Republic. It is built according to the mountain situation and is made of hard pine wood and solid rammed earth. It is large in scale and can accommodate 2,000 people. It is equipped with lighting, vents and sewers. The overall design is scientific and reasonable, and it is hidden, stable, convenient and Safety features.