1, the belt on the sweatpants is too long, so you can tie a knot on your finger as shown in the figure below;

2, first around three fixed fingers, around a circle;

3. Then, do another lap in the same way, a total of two laps;

4. The trouser pocket passes between the middle finger and the ring finger and is pressed straight with the thumb;

5. Continue to press your thumb into the gap between your fingers, as shown in the figure below;

6. After coming out, put the horizontal line between the ring finger and the middle finger, as shown in the figure below;

7. Then pull it out, as shown in the figure below;

8. Pull it out after pulling it out, as shown in the figure below;

9. Take out the fixed finger and keep the finger pulling the rope still;

10, adjust, tidy up the shape and tie a knot;

1 1, and the other one can use the same method. The following figure shows the effect of all fastening.