Picture of homemade mosquito-repellent incense rack.

The self-made picture of mosquito-repellent incense rack is as follows:

Find a wire, then twist it into a circle, then screw the long end into the circle, and break it straight up, and a mosquito-repellent incense bracket will be made.

Extended data:

A mosquito repellent, the smoke emitted by the medicine inside can drive away mosquitoes or kill them. In China, the history of lighting mosquito-repellent incense is very long. Traditional mosquito-repellent incense is divided into thread incense and coil incense.

The smoke of mosquito-repellent incense contains four kinds of substances harmful to human body, namely, ultrafine particles-smoke (particles with a diameter less than 2.5 microns), polycyclic aromatic hydrocarbons (PAHs), carbonyl compounds (such as formaldehyde and acetaldehyde) and benzene. At the same time, in addition to these four obvious harmful substances, there are a lot of additives such as organic fillers, adhesives and dyes in mosquito-repellent incense, so that mosquito-repellent incense can be smoldered without flame.

The invention of mosquito-repellent incense may be related to the hygiene customs of the ancient Dragon Boat Festival and the custom of burning incense and offering sacrifices. "The Chronicle of Jingchu" records: "During the Dragon Boat Festival, four people step on a hundred herbs, collect moxa for people, hang in the house, and poison gas." In the early Dragon Boat Festival, people often soaked realgar wine in addition to inserting wormwood at the door. Doing so may make the air cleaner, and secondly, it can prevent mosquito bites.

The invention of mosquito-repellent incense may also be related to the ancient custom of burning incense and offering sacrifices. China started the custom of burning incense and offering sacrifices very early, and the earliest record about this custom is Zhou Song Wei Qing: "Wei Qing captured Xi, the classic of Zhao Qi, the king of literature." It means that Zhou people burn some firewood to smoke to worship the sky, which is called "sacrifice" or "sacrifice".