Herb selection dryness syndrome

To treat a syndrome of warm-dryness, sweet and cold herbs that enter the Lung meridian are selected to moisten the Lung. 

To treat a syndrome of internal dryness of the Lung, sweet, bitter and cold herbs are selected... 

These herbs are aromatic, light and cold, and enter the Upper-Jiao. Sang Ye and Bo He enter the Lung meridian and Lian Qiao enters the Heart meridian. Their aromatic smell can disperse the constrained Qi and heat in the Lung and their cold nature can reduce the heat and protect the Yin. They are often selected as chief in the formulas to treat the syndrome of warm-dryness. 

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