The pig is sick. The reason why the pig's belly feels uneven after drowning is because the pig is sick and there is a high probability of parasites on the pig's belly, so don't eat the pig's belly for the sake of physical safety. If it is white, like the size of a grain of rice, and it has a touching feeling, it is rice and pork. Rice pork is dead pork with cysticercosis. This kind of meat is very harmful to human body and can't be eaten.