Fujian Putian lunar calendar in September can still catch green crabs. According to the relevant information, the green crab in Fujian Putian lunar September has matured out of the hole, this time each big head, crab paste, meat is delicious, more nutritious. Green crab, also called green sea-crab, has different names in different growth stages. Green crabs like to inhabit in the intertidal mud and sand beach, mangrove forests or marshes, burrowing in the cave during the day and coming out at night to forage for food, so they are commonly known as mud crabs or mangrove crabs.