Wind-heat refers to wind-heat invading the exterior and disharmony between lung and qi, with symptoms such as fever, sweating, dizziness and thick phlegm.

Wind-cold refers to wind-cold invading the exterior, and lung qi cannot spread. The symptoms are fear of cold, no sweat, white phlegm and general pain.

There are many treatments, such as chrysanthemum drink, which can relieve exterior syndrome in hot weather. Ginger and red pond can drive away the cold.