1, prevention of plague, herbal medicine can be locally sourced, and modern medicine pharmacological research shows that mugwort is a broad-spectrum antibacterial and antiviral drugs, it is a lot of viruses and bacteria have inhibitory and killing effect on the respiratory system diseases have a certain preventive and curative effect.
2, mugwort and Chinese life has a close relationship, every Dragon Boat Festival, people will always be placed in the home in order to "avoid evil spirits", culm withered after the plant soak fumigation in order to achieve disinfection and relieve itching, maternity more than with the bath or fumigation of mugwort.
3, the traditional medicinal theory that the leaves of moxa has a rationalization of qi and blood, expel cold and dampness, warm menstruation, stop bleeding, and fetal role. Modern experimental research has proved that mugwort has antibacterial and antiviral effects; asthma, cough and expectorant effects.
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Every Dragon Boat Festival, according to folk tradition, every household hangs a leaf in front of the door, according to the old generation, this is to "ward off evil spirits", but more importantly, in order to repel mosquitoes and flies, insects and ants, purify the air, so, the Dragon Boat Festival has traditionally been known as the "Health Festival. With the improvement of people's living standards, but the custom of hanging mugwort has not changed. Mugwort is mostly home-grown or picked from the wild. People usually plant a bit of mugwort in front of or behind their houses or in a small corner of their own land. The Dragon Boat Festival, celebrated on the fifth day of the fifth month, is one of the four traditional festivals in China. Families hang up mugwort and calamus as an important activity. Reference: