The implication of eating king crab

Eating king crab means "good luck first". The crab has eight legs and extends in all directions, which also means "good luck in all directions".

The moral of money is that two of the crab's eight legs are big pliers, and "pliers" is homophonic with "money", so eating crabs' pliers during the Spring Festival has a moral.

It means good luck, because crabs usually show fiery red color after cooking, and prosperity means good luck.