Tool: rubber band
Steps:
1. Tie your hair high into a bundle by hand.
2. Fix the hair bundle with one hand and gently pinch the hair on the top of your head with the other.
3. Pull out a few strands of hair from the side, and Mao Mao Jr. at the back of his neck also pulls out some.
4. Fix the ponytail with a rubber band, and don't pull out all the hair in the last lap, and fold it into a ball head.
5. Fold the hair tail in half and put it into the rubber band to fix it, and you can finish the ball head.