1. Flat carving is more practical, mainly using bright and edible raw materials, such as radish, cucumber, steamed cake (steamed in egg white or yolk with a little starch and salt), etc. First, the raw materials are cut into simple geometric three-dimensional shapes with a kitchen knife, and then the patterns are carved in a more detailed way. The smaller arc-shaped part can be trimmed with a slot knife and finally cut into pieces with a kitchen knife. Sometimes the graphics are very complicated. You can carve them into parts first and then assemble them. If conditions permit, you can make some model tools in advance to directly cut raw materials, and the method is relatively simple.

2. Yin and Yang carving, also known as concave carving and convex carving, is a relatively simple method in relief. -Watermelon, wax gourd and pumpkin are generally used as raw materials. First draw a pattern on the melon skin, then carve a suitable depth along the pattern with a knife, and then carefully peel off the unnecessary melon skin. If it is a front pattern, peel off the melon skin outside the pattern. If it is a negative pattern, the pattern in the picture will be stripped off. After peeling, patterns will appear when only concave or convex surfaces are left.

3. hollowing out, hollowing out is to carve raw materials into hollowed-out patterns. The famous "Yangzhou melon carving" mostly uses hollowing out, which is difficult. You can make some simple styles at home, such as hollowed-out flower boards, hollowed-out lace and hollowed-out figures.