The belt is not long enough, so it can be fixed with plastic fixing strips. The specific operation method is as follows:

1. As shown in the figure below, the belt is not long enough to barely pass through the valve port, but not through the trouser head hole.

2. At this point, find a plastic fixing strip, pass through the belt and adjust the plastic fixing strip to the center position.

3. Pass through the button of the plastic fixing strip, and then tighten and fix it on the belt as shown in the figure below.

4. Then use scissors to cut off the tape of the extra plastic fixing strip, and don't cut the buttons.

5. Then move the plastic fixing strip by hand, adjust it to the best position, and fix the belt. If the belt is shorter than the figure, more plastic fixing strips are needed to fix it.