Hui people should put an end to filth, filth, greed, laziness and stupidity. These habits can be fully reflected in pigs, and not eating is to stay away from their bad habits. Cattle and sheep eat clean water and grass, and pigs eat anything filthy, which is ugly and disgusting. Fasting pork is not only a patent of Islam, for example, Judaism and Christianity also have the precepts of fasting dead animals and pork.