Second, determine the basis
1, where the drug quality is heavy and the flowers and leaves are light, the drug mainly rises and floats, such as chrysanthemum; The drugs with heavier seeds and fruits are mostly diazepam, such as perilla.
2. The drug smells are strong and weak, and the weak ones are mainly ascending and descending, such as perilla leaves and honeysuckle; Those with strong smell are mainly settled, such as cultivated land.
3. Drug taste, in which drugs with warm and sweet taste are positive, mostly ascending and descending, such as cassia twig, and drugs with cold, sour, bitter and salty taste are negative, mostly determined, such as Fructus Trichosanthis.
4, the effectiveness of drugs, the clinical efficacy of drugs is the main basis to determine its rise and fall, the trend of diseases is often upward, downward, outward, inward, diseases are manifested in the upper, lower, outer, inner, such as forward can reduce phlegm and reduce qi, good governance of lung cough, phlegm, qi, so it belongs to deposition.