When choosing a crab, you should look at the abdomen. When choosing a live crab, you should pick it up and weigh it first. Those with strong claws are better. When picking sea crabs, crabs with black-green shells and shiny backs are usually thick and strong; crabs with yellow shells are mostly thin. In addition, you should also choose a crab with strong clamping force, full navel, white belly, and deep and thick lines. If you encounter a crab with yellow belly, shallow and thin lines, and light weight, it means that it is not strong enough.

When choosing shrimp, look at the shell color. For fresh shrimp, its shell should be blue-gray, transparent and shiny, and the head and body should be closely connected. If the shrimp shell has turned red and the head and body are broken, it is best not to buy it.

There are too many others to mention. I suggest you go to the official website of Juxianfang and ask the seafood experts for advice.