Soak the selected yams(sliced) and euryales in water for 1 hour, rinse thoroughly for later use;
Soak the aged dried mandarin peel in water, remove its vein; remove the kernel of the jujubes(XL) and rinse thoroughly for later use;
Rinse the grouper thoroughly and halve it, dry the grouper by kitchen towel; heat the wok, fry both sides of the grouper into golden color, put it into fish soup bag;
Cut the pork loin into pieces, cook them in boiling water for a while, take them out and rinse thoroughly for later use;
Put all ingredients into a casserole, pour in some hot water, turn to low heat after boiled; continue to boil for about 3 hours, add salt before serving.