Introduction to National Defense Science and Technology: The Military Science and Technology Exhibition Hall is located on the third floor of the main building of the Science and Technology Museum, with a display area of ​​1,061 square meters and a total of 14 exhibits. This exhibition hall is the first domestic exhibition area to independently introduce national defense technology in a science and technology museum. It is a unique domestic base for carrying out patriotism education and national defense education in a science and technology museum to promote the important role that scientific and technological progress plays in maintaining world peace and promoting human development. , embodies the scientific spirit and humanistic spirit, and shows the process of human beings protecting peace. This exhibition hall combines Chongqing's military resources to simulate the "newness, strangeness, danger and uniqueness" of war, displays knowledge about military and science, war and peace, and allows the audience to understand the history, reality and future of national defense technology. It is composed of supporting themes such as A Thousand Miles Away and Tomorrow's Teacher.