1, first of all, hold the crab down, hold the crab's shell with your thumb and forefinger, hold the crab down first, and don't let it move, or the crab's claws will easily hurt your hand.

2, hold down the crab, let it don't move, and then put the crab's eight small claws in the middle, be sure to hold it steady, don't let the crab break free.

3. Then use a hemp rope. It is best to wet the hemp rope first, so that the friction is large. First, use the hemp rope to wrap the crab around, tie the crab's hands, feet and body, and then wrap it around a few more times.

4. Finally, turn around a few times in another direction and make a cross, so that the crab is tied firmly and its claws are tied tightly.