White wine method: put the crab in a bucket, pour in the right amount of white wine, and wait until the crab is slightly drunk, use a brush to scrub the crab pincers and brush off the hairs.

Hobby knife: use a hobby knife, scrape a few times against the hairs on the crab pincers, and scrub the crab pincers with a hard brush, which can brush the hairs clean.