Tools: hairy crabs, clean water, brushes.
1. soak the hairy crabs for a while, as shown in the figure.
2. Wash the crab belly under running water, as shown in the figure.
3. Brush the crab's back under running water, as shown in the figure.
4. Brush the crab mouth under running water, as shown in the figure.
5. Brush crab claws and leg hair under running water, as shown in the figure.
6. Brush crab claws under running water, as shown in the figure.
7. Finally, brush the rope that binds the hairy crabs and clean them.