Classification of broken hair: long broken hair (most of the hair is about 20 cm long, bangs completely cover the eyes and naturally droop and cling to the mouth, and the sideburns are about to the chin, and the back has covered the neck) ordinary broken hair (most of the hair is about 12 cm long, bangs cover the eyes, the sideburns are slightly longer than the ears, and the back hair naturally droops slightly and covers the neck) short broken hair (most of the hair is about 5 cm long). Liu hai is located on the forehead, slightly longer than the eyebrows, with sideburns, and the back is flush with the hairline. They are randomly broken (super layered, partially messy, long broken, short broken, and common broken hair) hair inch (most hair is about 3 cm long, with bangs and sideburns, and the back is flush with hairline) hedgehog head (most hair is less than 3 cm long, bangs and most hair form 1 whole, without sideburns).