The crab's mouth is where the crab eats (see the picture below). After steaming, opening the crab shell is the position of crab gills; This part cannot be eaten;

Changdang Lake is located in the southeast of Jintan City, Changzhou City, across Jintan City and liyang city City. It is one of the top ten freshwater lakes in Jiangsu Province and one of the best hairy crabs in China at present.

Compared with Yangcheng Lake hairy crabs in Suzhou (such as Yangcheng Lake hairy crabs in Su Xiege), the popularity of lake crab is not loud enough because of publicity and promotion. There is still a lot to go; In fact, compared with the taste and fatness of crabs, the crabs in these lakes are quite good.

I hope the above can help you to some extent;