1. Tighten the belt, loosen the knot, and slowly untie it along the knotted position. Patience is required.

2. Cut the belt directly. Look clearly at the direction of the rope in the knot, find a cutting point, and then cut it slowly without losing much length of rope, and it can be untied in the same way. The double single knot sounds like two single knots, but it is not the case. The function of the double single knot is to make a round knot. In fact, the double single knot is not more complicated than the single knot. In fact, it is just to fold a rope in half and tie a single knot.