The amount of water added to the correct method of boiling Chinese medicine depends on the amount of medicine, texture and decoction time, and is usually 3 to 5cm above the plane of the tablet. Each dose of medicine is usually decocted twice, and there are also people who decoct three times. The amount of water in the first decoction can be more, and the amount in the second and third decoctions can be slightly less. The amount of medicine obtained from each decoction should be about 150mL. Please consult a professional Chinese medicine practitioner or pharmacist for the specific method of decoction. Soup is one of the most commonly used dosage forms of traditional Chinese medicine. Generally, the herbs are soaked for 30~60 minutes before decoction, after which the herbs are decocted twice, and the liquid of the two decoctions is dregs removed and mixed, then divided into 2~3 times for consumption. Some herbs have special texture, so the method of decoction is also special, please pay attention to read the prescription in detail. Generally, tap water, well water, distilled water, etc. are used for decoction, and clean and fresh water is preferred. It is better to use casserole and tile pots, and avoid using metal pots and pans such as copper, iron and aluminum to prevent chemical changes in the herbs.