Smilax glabra and water snake soup

Practice: water snake 1 kg, peeled and viscera removed, Poria cocos 1 kg, peeled and sliced, pork bone 1 kg chopped, 3 candied dates and appropriate amount of ginger slices. After all the meat is blanched in water, put it in a clay pot with all the ingredients, fill it with water, and then turn to low heat for seasoning for 3 hours.