A look: crab shell shell shell color is bright, shiny, and dark green, generally thick and solid; yellow, most of the more thin and weak; can be selected to the The "Golden Hair Golden Claw" is better.
The second look: navel protruding, generally fat fat cream full: concave in, most of the fat body is not enough. When the hands of the crab should also feel enough "heavy", this is to pick the fat and cream, crab meat full of hairy crabs.
Three look: crab feet claw solid, crab feet on the "foot hair" clusters, generally fat old healthy; hairless, most of the body is soft no fat.
Four look: male and female As the saying goes: "Pick female crabs in the eighth month of the lunar calendar, male crabs after the September election. Because after the ninth month of the lunar calendar, male crab gonads mature well, taste the best nutrition. General navel round for female crabs, navel pointed for male crabs.
Five look: vitality of the crab will turn around, can quickly turn back with the crab foot flick, indicating that the vitality of the strong; can not be turned back, the vitality of the poor, the storage time can not be long. Can also be observed through its "horizontal", crawling belly off the ground is a good thing. Of course, the crab feet are tied, that is not included. However, you can also see whether the crab is responsive, if the hand or branch touch its eyes next to the eye, the eye will be flexible flashing, responsive, or will "mouth spray white bubble", or enough to be fierce and fresh.