In winter, the temperature is 7 degrees, and there are crayfish around. Lobsters can be eaten all year round. Some farmers put some cages in the pond with sand in the middle to keep warm. According to the normal law, in winter, crayfish will hibernate by drilling holes, stop eating, put them in cages, put them in ponds, and then control the temperature, so they can't hibernate and become out-of-season shrimps. In winter, the temperature is 7 degrees, and crayfish are eaten around them.