What is the grass hanging at the gate of Dragon Boat Festival? What's the point?

According to folklore, inserting wormwood in Dragon Boat Festival not only has the purpose of attracting wealth and evil spirits, but also has the effect of preventing diseases and repelling mosquitoes.

Wormwood is a common weed in rural areas, but it has many uses, one of which is to repel mosquitoes and purify the air. This is because the stems and leaves of wormwood contain a volatile aromatic oil, which can drive away mosquitoes, flies and insects and purify the air.

Farmers believe that as long as it is the Dragon Boat Festival, wormwood can be inserted in the morning, noon and evening, and there is no stipulation on what time of day it must be inserted. There is nothing special about this, it can be done sooner or later, but the older generation in rural areas generally think it is better to insert it in the morning, so they hang wormwood at the door early on the Dragon Boat Festival.

Extended data:

Method of hanging wormwood

Generally, two or three of the five plants such as Acorus calamus, wormwood, pomegranate flower, garlic and Shandan are selected. Usually, wormwood and calamus are tied into a bundle with red rope and then hung on the door or window.

Just as there is no time limit for hanging wormwood, there is no time limit for taking it down. It doesn't matter if you hang up for a few more days or less. Generally, wormwood will not be taken down until it is tasteless, so wormwood will usually be hung at home for about a month before it is taken down.