2. wormwood contains volatile oil, which will burn after ignition. However, the volatile oil content of Artemisia argyi is high, and it is not easy to extinguish when it is ignited, so the ignition temperature is not easy to control, and the volatile oil has a strong smell, which makes people feel uncomfortable. Ai Chen has less volatile oil, which is easy to ignite and extinguish, and the temperature is also suitable. A faint wormwood smell;
3. In fact, the moxa stick is mainly made of moxa wool, which is soft and delicate like cotton after repeated drying, beating, crushing and screening out impurities and dust. The longer the mugwort leaves are preserved, the thinner the treated mugwort leaves are, and the better the mugwort leaves are.