Decoction utensils: casserole, tile pots are good, enamel pots are second best, avoid using iron, aluminum or copper pots, stainless steel pots can also be used. Soak for 30 to 60 minutes before decoction, the amount of water used should be one cross finger above the surface of the medicine. When decocting the medicine, first boil it on high heat, and then continue to decoct on low heat. The time for decocting the medicine is usually counted from when the water boils. Generally speaking, 1 medicine should be decocted 2 to 3 times, for example, 1 medicine should be decocted 2 times, 1 medicine should be taken once, or 2 times in a row, and the liquid of the 2 decoctions should be mixed well, and then taken warmly in 2 times. The term “first decoction” refers to the first 15 minutes of decoction, and then the other medicines in the decoction are put into the same decoction. (Goldstone, minerals, and shells should be broken and decocted for 15 minutes, and aconite and aconite should be decocted for 15 to 60 minutes.) “The last 5 minutes should be added. If a medicine is to be decocted for 2 times, divide the medicine into 2 portions and put 1 portion in the first 5 minutes of each decoction. If the medicine is to be decocted for 3 times, add it in the last 5 minutes of the first 2 times and then decoct it for 1 time in the third decoction. “Brewing” means: use warm boiled water or the liquid taken after decoction of other medicines in the formula to brew the medicine. “Wrapping the decoction means: wrapping it in gauze and then putting it together with other medicines to be decocted together.