"Encyclopedia of Ancient and Modern Medical Traditions". According to the information related to the new coronavirus, we learned that ginger and green onion white soup comes from the "Encyclopedia of Ancient and Modern Medical Traditions". "Encyclopedia of Ancient and Modern Medical Traditions" recommends that positive patients with fever and no sweating drink brown sugar, ginger and green onion soup, which consists of 20g of brown sugar + 3 slices of ginger + 2 sections of green onion + 300ml of water. Boil it and drink it hot.