Artemisia argyi, also known as Artemisia argyi and Artemisia argyi. Its stems and leaves contain volatile aromatic oils. Its unique fragrance can repel mosquitoes, flies, insects and ants and purify the air. Chinese medicine uses wormwood as medicine, which has the functions of nourishing qi and blood, warming uterus and dispelling cold and dampness. Processing Artemisia argyi leaves into "moxa wool" is an important medicinal material for moxibustion treatment.

Acorus calamus is a perennial aquatic herb, and its long and narrow leaves also contain volatile aromatic oil, which is a good medicine for refreshing, strengthening bones, eliminating stagnation, killing insects and sterilizing.

It can be seen that the ancients inserted wormwood leaves and calamus to have a certain disease prevention effect. Dragon Boat Festival is also a "health festival" handed down from ancient times. On this day, people sweep the courtyard, hang mugwort leaves, hang calamus, sprinkle realgar wine, drink realgar wine, stir up turbidity, remove rot, sterilize and prevent diseases. These activities also reflect the fine traditions of the Chinese nation. It is a common custom for all countries and ethnic groups in China to collect herbs on the Dragon Boat Festival.