1. First, we have to make a pattern. The bottom of the pattern is one-eighth of our own head, and the height is 19. Then we cut 8 pieces of cloth and 8 pieces of lining. ?

2. Next, sew 8 pieces of cut cloth on the sewing machine. When finished, open the incision and don't cut the suture. The lining is sewn in the same way. ?

3. Please don't leave a 5cm seam hole when sewing the fabric next time. In that case, it is the last mouth that can be turned out. ?

4. Finally, press the open line along the last circle of the brim and iron it with an iron to make the octagonal hat.

An octagonal hat, that is, a hat with eight corners. Men generally choose type 55-56, and women generally choose type 50-55. Measure the length around the ear and choose the number according to the length around it. The octagonal cap is also called "liberation cap", which is named after the octagonal mouth on the top and outside of the cap. There is a brim at the lower end and a half-moon brim in the middle of the front. It was originally the military hat of the Eighth Route Army, and later it was developed into a hat suitable for the Spring and Autumn Period. There were many wearers around the 1950s.

Yin Deming struggled for three nights and was finally encouraged by the fact that the Revolutionary Army of Workers and Peasants had eight columns and an octagonal building. After studying with the design team, he cut out the first octagonal hat of the Red Army. Later, the Chinese Workers and Peasants Revolutionary Army all wore octagonal hats designed by him.