1.Agility in making formulas 2.Exact dosage 3.Cleanliness and sanitation 4.Easier storage and convenient carrying Properties: Chinese yam is sweet in flavour, neutral in nature, and acts on the lung, spleen and kidney channels. Sweet, neutral, moist, not dry and not greasy for invigorating Qi and nourishing Yin, it is good for invigorating Qi and Yin of the lung, spleen and kidney channels, ...