When was the custom of "expelling drugs" formed during the Dragon Boat Festival?

According to the old people, the Dragon Boat Festival is the fifth day, which is the hottest day in late spring. It is said that poisonous insects and beasts will come out at this time, so everyone will paint realgar that poison fears to avoid toxic diseases. In addition, because the Dragon Boat Festival is located between spring and summer, mosquitoes begin to increase, so everyone will use the smoke of burning calamus and wormwood to repel insects.

On the fifth day of the fifth lunar month, people used to eat zongzi to commemorate the great poet Qu Yuan.

The custom of wearing five poison clothes exists in many places, but it is mainly concentrated in the south of the Yangtze River. Dragon Boat Festival is a very important traditional festival in China. Everyone knows the origin of the Dragon Boat Festival, just to commemorate our poet Qu Yuan. From this, we also have many customs, from the beginning of making zongzi to dragon boat racing, to the end, we also have five shoes with five poison clothes, and some places still need to worship the five poison temple fair. In fact, these five poisons are snakes, scorpions, toads, centipedes and geckos. The unique function and custom of windows come from the Dragon Boat Festival around May, when the weather is getting hotter and hotter, so many bacteria are easy to multiply, and then these poisonous insects will start to haunt. People are easily bitten by these poisons, so the Dragon Boat Festival is still a festival to drive away the poisons in people's hearts. Therefore, people have the custom of wearing five toxic clothes to avoid being bitten by poisonous insects and causing physical injury. Because it was very troublesome and inefficient to be bitten by this poisonous insect at that time, people at that time were very afraid of this poisonous insect. Wearing five poisonous clothes also showed that people at that time were fighting poison. Some people may say why they don't wear clothes embroidered with rooster patterns, because roosters are the natural enemies of these poisons, but what people want is to conquer them with poison. The so-called "fight poison with poison" to drive away poisonous insects. Generally, babies like to wear poison clothes, because babies are most likely to be bitten by poisonous insects at this time, and they are also the people with the worst resistance, so babies wear more poison clothes. And the people themselves will wear five poison clothes.