Huayama: flat, sweet flavor. It belongs to the lung, spleen and kidney meridians. It strengthens the spleen and stomach, replenishes lung qi, and benefits kidney essence. Can dilate blood vessels, improve blood circulation; enhance immunity, delay cellular aging. Suitable for all physical weakness, weakness after illness, malnutrition, spleen deficiency, chronic diarrhea, loose stools, fatigue, women's leucorrhoea is thin and thick, lung and kidney deficiency, chronic coughing, shortness of breath, croup, spermatorrhea, night sweating, frequent urination at night.

White potatoes: flat, sweet flavor. Attribute to the spleen meridian. Laxative and detoxification, assist in lowering blood pressure, anti-aging. Suitable for weak spleen and stomach, qi and blood deficiency, damp-heat jaundice, chronic liver disease.

The Chinese yam is a kind of yam. You see, there is a big difference between the efficacy and application of Chinese yam and white potatoes.