Boil a handful of Folium Artemisiae Argyi and soak in water, or take a quarter of pure Folium Artemisiae Argyi, shred it and put it in a foot soaking bucket, then add ginger and boil it in boiling water for a while. After the Folium Artemisiae Argyi is soaked, you can add some warm water. Isn't it very simple? You can also cook it yourself at home, just prepare mugwort leaves and ginger.
You need to pay attention when soaking. Soak until the whole body sweats slightly, but you can't sweat. Then drink more warm water, usually 2-3 times, but not every day. You should soak it every other day. After soaking, drink warm water at the same time, don't eat cold food, and pay attention to rest. The discomfort of head, face and throat caused by these deficiency fires and cold fires will be obviously improved or disappeared, which will drive away the cold for you. Isn't it great?