This situation has been found a lot in our country, and I have seen it myself. Things like this are usually because pigs eat their own hair while cleaning themselves. In the long run, because it is not digested, it will be digested in the stomach and entangled back and forth for a long time. The formation of pig treasure is that there is a disease in the intestines, which gradually forms a kind of stone, which is a little yellow and no different from stones, and can cure mental illness.