What species/type of crab is this?

Hi guys.

This morning I bought myself a crab and since the tanks were labeled in Chinese characters, I couldn't read what species of crab it is, so I'm having trouble googling for information on how I should set up its tank.

Could you guys help me figure out what type of crab it is, and also how should I set up its tank?

Here's a photo of the crab:


Thanks guys!