How did the ancients repel mosquitoes?

People hate mosquitoes. Both ancient people and modern people have been trying their best to eliminate mosquitoes and mosquitoes. However, mosquitoes that like humans are like challenging us. Every summer, they always hum songs in our ears ... the ancient methods of repelling mosquitoes and weeds-in order to prevent the harm of mosquitoes, the ancients usually kept some mosquito-repellent plants at home, such as mosquito repellent grass and cordyceps. Burning wormwood-Lu You, a great poet in the Song Dynasty, wrote a poem about mosquitoes: "There are many mosquitoes in Zeguo, and the night is a reminder. If you hold up a fan, you can't put it down. Take a piece of burnt moxa. " The poem describes the method of using a fan to repel mosquitoes instead of using wormwood to smoke. Burning wormwood to repel mosquitoes is very common among the people. Hanging sachets-Hanging sachets is one of the habits of ancient people in China. Many medicinal materials in the sachet are also considered to have mosquito repellent effect, such as Pogostemon cablin, mint, perilla frutescens, Acorus calamus, citronella and Illicium verum. It is equivalent to carrying a "mosquito bite" on your back. Curtains-In summer and autumn, mosquitoes are rampant, and people gradually invented mosquito nets and mosquito coils. In ancient times, curtains were the main anti-mosquito tools. During the Spring and Autumn Period, there was a kind of "green gauze" in Qi Huangong, which made it impossible for hungry mosquitoes to camp. Yuan Mei, a poet in the Qing Dynasty, also wrote a poem: "Bai Niao (that is, mosquitoes) is in a hurry in autumn. If you want to camp, you must look for it. Corrupt officials are declining, but assassins are old. Attachment still depends on the account, and sorrow is more bitter. Pity that he is a worm, but he has come to this day. " Although the poem satirizes that people have mosquitoes, it is about how to hide mosquitoes with mosquito nets. Light mosquito-repellent incense —— The invention of mosquito-repellent incense in ancient China is probably related to the custom of burning incense and offering sacrifices. There has been real incense burning since the Han Dynasty, because incense burners appeared in the Han Dynasty. According to historical records, there was a record of "burning incense from the moon to the sun" in the Han Dynasty to "avoid the epidemic". Burning incense has changed from "communicating with God" to "avoiding epidemic". With the change of materials, the function of incense is also expanding, and it has developed into the function of mosquito repellent. It is recorded in the scientific and technological work Shuo Shi lue in the Song Dynasty: "Duckweed is picked in the Dragon Boat Festival, dried in the shade, and realgar is added. You can wrap it in paper and burn it to repel mosquitoes. " This should be regarded as an early "mosquito repellent incense". Mosquito killer —— The ancient people used many tools to avoid and kill mosquitoes. Jin Ping Mei recorded a mosquito killer called mosquito killer. At present, the visible object mosquito killer appeared in the Ming Dynasty. The ancient mosquito killer was hung in a mosquito net with a small window beside the lamp. When the lamp is turned on, an air flow quickly flows in from the small window, and mosquitoes in the mosquito net will be sucked into the lamp by this hot air flow. Mosquito-killing jar-There were many ways for the ancients to avoid mosquitoes. They also invented a "mosquito killer", which is a big jar filled with water and stones. The ancients kept some frogs in pots. Mosquitoes enjoy the cool, and as soon as they fly in, they become frog's food.