There is a folk proverb that says, "Willows are inserted in Qingming Festival, and Ai is inserted in Dragon Boat Festival". On the Dragon Boat Festival, people regard inserting wormwood and calamus as one of the important contents. Every family sweeps the court, puts calamus and moxa sticks between their eyebrows and hangs them in the class. Acorus calamus, Folium Artemisiae Argyi, Liu Hua, Garlic and Dragon Boat Flower are made into human or tiger shapes, which are called Ai Ren and Ai Hu. It is made into garlands and decorations, beautiful and fragrant, and women compete to wear it to ward off evil spirits.
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.