1. River crabs are the fattest from late July to early August. In late July, the river crabs will go to freshwater to lay eggs, and they will lay eggs in eight seconds. At this time, the river crabs are tasteless and thin, so the river crabs that have not laid eggs are fat and delicious.

2. The scientific name of river crab is Chinese mitten crab. It is a precious freshwater product. It has high economic and nutritional value because of its delicious taste, tender meat and balanced nutrition. Popular among people, it is by far the most produced freshwater food in the country. River crab is not only delicious and delicious, but also has the functions of supplementing calcium and strengthening bones, strengthening the brain, delaying aging, and anti-tuberculosis. It is a rare delicacy.