To treat wind-cold syndrome and Feng Shui edema, the suitable decoction pieces are:

Answer: A

Ephedra tastes pungent, slightly bitter, and warm in nature. Returns to the lung and bladder meridians. It has the functions of producing sweat, dispersing cold, relieving lungs and relieving asthma, diuresis and reducing swelling. ① The raw product has strong ability to induce sweating, relieve inflammation, diuretic and reduce swelling. It is mostly used for symptoms of wind-cold syndrome, Feng Shui edema, rheumatic arthralgia, vaginal gangrene, and phlegm core. ② Honey ephedra is warm in nature and slightly moist in nature. It is pungent and relieves sweating. It is effective in clearing the lungs and relieving asthma. It is mostly used for patients with mild superficial symptoms, blocked lung Qi, and severe cough and asthma. ③Ephedra has mild effects and is suitable for the elderly, young children and people with colds and colds. The usage is similar to that of ephedra. ④The effect of honey ephedra is more gentle, and it is suitable for the elderly, young children and patients with physical weakness whose superficial symptoms have been resolved but their cough and asthma have not been cured. The usage is similar to that of Honey Zhizhi Ephedra.