The legend of Hanging Mugwort on Dragon Boat Festival is as follows:

In ancient times, the water monster wanted to flood some places to make his territory, but such an idea was known to the gods in the sky, and the gods took pity on the people on the earth, so they thought of a way. The gods cut the wormwood and calamus to make a sword, and went to the water monster to have a duel. After several days and nights, the gods finally won.

The water monster promised the gods that as long as it was a descendant of the gods, then it would not invade, and if it could not do so, it would let the gods do the practice of hacking to death. The gods promised, and they agreed that as long as in the wall hanging wormwood and calamus home, then it belongs to the gods, not, then the water monster all. By the time of the Dragon Boat Festival, the Water Monster came on a wave.

When the wave came to the eaves of a house, the water monster would always see a bunch of sword-like wormwood and calamus hanging under the eaves of the house, and ran to many places, but only drowned some empty houses that no one lived in.

Finally, when it got dark, the water monster had to go back unhappily. It turned out that after the duel that day, the gods sprinkled the mugwort and calamus, which were used to make swords in their hands, on top of the houses where people lived, so that when it came to the Dragon Boat Festival, such a scene appeared. Later, when it came to the Dragon Boat Festival, people would hang some mugwort and calamus on the wall of their houses to scare off the water monster, so as to save their houses and properties.