Why do Northeasters have the custom of eating on the kang?

Villagers don't want to spend money on extra heating, so many activities focus on the warm kang. Big girls and little wives gossip, play poker, eat melon seeds, do needlework and so on. Naturally, they are used to eating on the kang. Northeasters are generous, so they can have a good drink if they have nothing to do. People who drink white wine are more likely to go to the beach (for a long time). If they eat underground, the food will get cold easily. Push a cup on the kang for a change and watch it warm.