Huanglian and chrysanthemum cannot be soaked together. First of all, Huanglian is a rhizome-based medicine, so it is difficult to utilize its medicinal effect by soaking in water. Secondly, Huanglian and chrysanthemum are both cold and easy to use together, causing some harm to the body. 1. Huanglian is bitter and cold in nature, and belongs to the heart, spleen, stomach, liver, gallbladder and large intestine meridians. It has the efficacy of clearing heat and drying dampness (removing heat and drying dampness), diarrhea and detoxification (removing fire and toxicity from the body). It is clinically used in the treatment of damp-heat lumpiness (stomach distension and discomfort), vomiting, high fever and dizziness, insomnia, blood-heat and vomiting of blood, nosebleed, stomach fire and toothache. It should be noted that Huanglian is bitter and cold, and should not be taken by people with weak spleen and stomach and loose stools. Allergic patients should be cautious. 2. Chrysanthemum is sweet, bitter and slightly cold in nature. It belongs to lung and liver meridians. It has the effects of clearing the liver and improving eyesight (removing liver fire to promote vision recovery), clearing heat and removing toxins (removing heat and toxins from the body), evacuating wind-heat and calming liver yang. It is used in the treatment of wind-heat colds, fever caused by the first signs of warm diseases, dizziness, headache, cough, hyperactivity of liver yang, redness and swelling of the eyes, and other diseases. When using Chrysanthemum, it should be noted that it is not suitable for people with deficiency of qi and cold stomach, and those who have little food and diarrhea. In addition, those who are allergic to this product are prohibited from taking it, and pregnant women should not take it. If necessary, it is recommended to go to a regular hospital, under the guidance of a professional physician to identify the evidence, combined with their own situation reasonable choice.