1. Selection of materials: Any paper can be used as the material for making Kongming lanterns, but it is best to choose materials with high density, light weight and difficult to catch fire. For example: translucent paper. Second, the design concept (sketch design perspective): The design concept must take into account the position of the center of gravity of 1 sphere: try to avoid the design that the center of gravity deviates from the vertical center line, so as not to make the fire source burn the sphere during the lift-off. 2 Appearance, aesthetics and surface treatment: If the design is asymmetrical, be sure to pay attention to the location of the fire source and the center of gravity. 3. The weight of the sphere and the size of the fire source: the weight of the sphere is related to the lifting force, which determines the temperature of the air heated by the fire source and the size of the sphere. The ball is too heavy and the fire source is too small. 3. Manufacturing procedure: 1. Calculate the volume of the lamp body and calculate the size of the split expansion (Figure 2). 2 Use these unfolded dimensions to cut the template with cardboard. 3 use the template to cut the skin. 4 Bonding: (1) There are two bonding methods: (a) Overlapping bonding method: after bonding, the bonding place will protrude from the ball surface. (b) After bonding, the bonding place is flat on the spherical surface. (Figure 5) (2) Bonding step: (a) First, two pieces are bonded. (b) repeating the combining step of (a) until the appearance is finished. 5. Installation of lamp holder: Stick a base made of thin iron wire or cardboard on the bottom of the lamp body, and install a fuel bucket made of aluminum foil or lighter aluminum can on the base. (as shown in fig. 7) 6. Test its stability: blow up the lamp body with a blower to test its stability and check whether there are holes. (Figure 8) 7. Painting and coloring. (fig. 9) 4. Emission process: The making method of Kongming Lantern is simple, but it is greatly influenced by the venue and weather when it is launched. When the wind is strong, it is easy to blow the lamp body obliquely and burn it out. When it rains, it is easy to get wet and cannot be released, so it is best to cast it when there is no wind. 1. First, turn on the lamp body and tie the control lines around and at the bottom. (Figure 10) 2. Fill up the fuel. 3. After ignition, the air inlet should be as low as possible to reduce the loss of hot air, but it should not be too low to avoid the flameout due to insufficient oxygen. At the same time, the surrounding control lines must be straightened. (Figure 1 1) 4. When the hot air temperature in the lamp body is enough, slowly loosen the surrounding control lines to keep the lamp body rising steadily. The bottom control line must control the rising speed and height of the lamp body. (fig. 12) 5. After the sphere is launched, its height and direction can be linearly controlled, and it can also float freely, thus completing the launch.