Catching a cold when the wind blows is a sign of qi deficiency (the body’s qi is weak, resulting in insufficient consolidation), and the indications for Fangfeng Tongsheng Pills are external cold and internal heat (cold outside the body and heat inside the body), so patients with qi deficiency are not recommended to take Fangfeng Tongsheng Pills. Catching a cold when the wind blows means that the patient’s coupling (pores) is loose and the positive qi is not solid, so it is easy to feel external evils, which is a manifestation of qi deficiency, and can be clinically treated with qi-solidifying (tonifying qi and stabilizing the pores on the surface of the body) medicines, such as Jade Ping Feng San. Fangfeng Tongsheng Pill is composed of Fangfeng, Jingwu, Rhubarb and Mangniu, etc. It has the efficacy of clearing heat and removing toxins (clearing heat and toxins from the body), relieving the surface and clearing the interior (relieving the surface evils and clearing the heat in the interior), and it can be used to treat the symptoms of external cold and internal heat, such as malignant cold (fear of cold), strong heat, dry pharynx, and constipation. The adverse reactions and contraindications of this drug are not clear. Patients with qi deficiency and lack of consolidation (weakness of the body’s qi, resulting in insufficient consolidation ability) are not suitable patients for Fangfeng Tongsheng Pill, therefore, this drug should not be used.