Eriocheir？ Dromedary? Eriocheir sinensis? Decapoda arthropod

What is the picture below? ? Lauridromia dehaani, Eriocheir sinensis, Germany (Hahn)

The shell is slightly wider than the shell, and the edge of the shell has coarse hair and some furry hair. The walking leg (walking leg) is smooth, and the inner edge of the second and third pairs of thigh nails (the seventh segment) has thorns of 16 to 20 points. The outer edge of the forefoot (the sixth joint) of the third and fourth legs has no thorns, and the inner edge of the fingertip of the fifth leg has no thorns.

I like to put a sponge on the shell to disguise myself. If I can't find a suitable sponge, I can bring an empty bivalve shell, a bunch of seaweed or a piece of debris. Distributed in Indian Ocean and western Pacific Ocean. Including the Red Sea, Mozambique and South Africa, and extending to Indian, Japanese, Guangdong and Taiwan Province provinces.