What you want to ask is can Sanmen blue crab be eaten in May? Yes. Sanmen blue crabs have been listed around Tomb-Sweeping Day, but the output is very small. A large number of them are usually listed around the Mid-Autumn Festival, among which the blue crabs in September are relatively fat, and it is better to eat them in summer and autumn. Sanmen blue crab is a special product in Sanmen County, Zhejiang Province, and a symbol product in chinese national geography. The crab is bright and blue in color, with a thin shell and large claws. It looks full as a whole, and it is delicious and tender when eaten.