Yam has a sweet and flat odor and comes from Zhongyue. It has the special essence of the Middle Earth and is a tonic for the Spleen and Earth of Taiyin. Therefore, the main treatment is all in the middle earth (spleen and stomach of the middle jiao). It can nourish the middle and benefit the vitality, replenish the weakness, grow the muscles and strengthen the yin. Disadvantages of yam: yam nourishes yin and is astringent and can help dampness, so it should not be used alone by those who are full of dampness or have stagnation, because dampness causes disease most fearful of tonic medicine, and tonic yin will congestion of qi and aggravate the symptoms. What is the situation that yam should not be eaten alone? If the child’s body shows symptoms of dampness, such as sticky stools and thick and greasy tongue coating, yam needs to be eaten together with barley kernel, or with poria, lotus seeds and gorgonians to form a four gods soup, and daily stews with pork belly or small intestine can be added to strengthen the spleen and dispel dampness and nourish the stomach. When there is accumulation of food, yam (9 grams) and fried chicken internal gold (about 6 grams) together with boiled water to drink. When you have constipation, boil yam (9 grams) with almonds (about 6 grams) and drink it together with water. When to eat yam? After each time a child has a cold, after the external evil is basically cleared, we need to strengthen the child’s spleen and stomach so that his righteousness grows, which makes it possible for a hundred poisons not to invade. Therefore, every time after a child has a cold, parents need to include the last stage of conditioning, which is to nourish the spleen. After the spleen and stomach are toned up, this child will be healthier and will not have recurrent colds or long-term coughs. How to eat? Directions: Soak the yam for about 20 minutes, then boil it on high heat and simmer it for half an hour on low heat. Feel free to drink it as water, this is the amount of wai yam water that the child drinks in a day, and give the child wai yam water as long as he drinks water in these two days. Dosage: 9 grams for children 5 years old, 6 grams for children under 5 years old, decreasing downward. The child should be able to drink it for about 3 days to nourish the spleen and stomach. How can I tell if a yam is good or bad? When drying yams, the traditional practice is to use sulfur to smoke them because of limited technical conditions. The smoked yam will be dehydrated quickly, the structure is denser, and it becomes whiter and less prone to deterioration. The fresh yam dried directly dehydrated sulfur-free yam, will become wrinkled because of dehydration, the color will also be slightly yellow, and even some small black spots in individual places, the shape of the look far worse than smoked yam.