It is a method to clear lung collaterals of heat and protect lung yin. After treating summerheat warmth, all symptoms subside, but if there is a cough without phlegm and the cough sound is clear and high, it indicates that there is still heat in the lung collaterals, and lung yin is inevitably consumed by internal heat. In this case, Collateral-Clearing Decoction (fresh Lotus Leaf edge, fresh Lonicera, watermelon rind, fresh hyacinth dolichos flower, sponge gourd peel, fresh Bamboo Leaf heart) can be used with Liquorice Root, Platycodon Root, sweet almond, Ophiopogon Tuber, and Anemarrhena for treatment.