The 24 exhibition halls of the National Museum of Aeronautics and Astronautics have a total area of 18,000 square meters. Each exhibition hall displays all kinds of aircraft, rockets, missiles, spacecraft, and objects used by famous pilots and astronauts which are of great significance in flight history. Except for the huge size of the model, most of the exhibits are precious or spare objects. There is no "Do Not Hand" sign on the exhibits in the museum. The audience can operate by themselves and shoot the exhibits at will. Today I went to the National Air Force Museum. From the invention of the plane by the White brothers in 1908 to the Air Force One and the Space Shuttle, there is a complete range. Feed one's sight on.