What kind of crab is this? (The pliers are red)

Hand crab decapod arthropod?

This is a mudflat crab unique to East Asia. Generally, caves are dug on the mudflats of the offshore freshwater river or in the inshore swamps, which can be found in grasslands, ridges and drainage ditches. It usually hides in stones or digs holes in the vertical taxi wall to live in.