The seven emotions of Chinese medicine compatibility. To be precise, it is like this: walking alone, begging each other, entrusting each other, fearing each other, killing each other, opposing each other, and hating each other. The so-called "single line" means that a single medicine can exert the expected therapeutic effect without the need for other medicines. Fuzi (zi) has a severe fever, so it can be said that a single line of medicine can cure serious illnesses. What should we do if we encounter licorice?