Wu Yuanqing proudly thought that making mosquito coils with wormwood and sulfur was the first thing he came up with, but in fact, this was not the case at all.

In the original history, the original mosquito incense first appeared in the Song Dynasty, according to the Song Dynasty Mao Su Shi in the name of the compilation of the "Gewu Rough Talk" record: "During the Dragon Boat Festival, collect and store duckweed, dry in the shade, add realgar, make paper wrapped incense, burn it, can get rid of mosquitoes." Pen "Fun" Pavilion www.biquge.info"

According to the Song Dynasty's "Materia Medica", it is recorded: "Artemisia mugwort leaves are dried and sifted to remove the green residue and take white, and sulfur is sulfur into the stone." It is likely that on the basis of this "sulfur wormwood" production process, people are reminded of the practical "mosquito coil" made from dried duckweed and realgar powder.

Such mosquito coils continued until the Qing Dynasty and then became even more improved in the Jiangnan region. Mosquito coils began to be made from a mixture of rosin powder, mugwort powder, tobacco leaf powder, a small amount of arsenic, and sulfur.

Wu Yuanqing thought of using wormwood, arsenic, realgar, and sulfur to make mosquito coils, which was almost the same as the mosquito coils that were only improved in the Qing Dynasty.

However, arsenic, sulfur, and realgar are all toxic, and arsenic and sulfur are quite toxic, especially arsenic. After thinking about it, Wu Yuanqing still decided to remove the arsenic without it, even if the mosquito repellent effect was almost safe, it should be as safe as possible.

Then the sulfur has to be removed, this thing is not easy to get now, Li Shimin has restricted the sale of this thing as a strategic material. A small amount of sulfur is still being sold on the market, but every time you buy and sell, you have to register the buyer's information, which is the same as buying and selling sulfur, or even stricter. Whoever has stored too much sulfur will be found out and will be directly imprisoned.

Therefore, it is suitable for wormwood and realgar.

Making mosquito coils is very simple, wormwood can be seen everywhere, realgar, and there are also in the huge Hou Mansion, and the rest is to get some clay as a binder.

After the next person got the materials, Wu Yuanqing began to make them.

"Big brother, what should I do with this thing." Wu Yuanshuang, who had nothing to do, squatted aside and asked curiously.

"Come, you cut these wormwoods into pieces and mash them in a garlic pot." Wu Yuanqing commanded.

"Me" Wu Yuanshuang said with a bitter face: "Just let the next person do it, why let me do it."

"I'm the big brother and I'm all in the mud, what's wrong with you doing something as a younger brother, no. If you don't want to do it, don't use mosquito coils." Wu Yuanqing said angrily.

Seeing that the boss's face was not good and his tone was unpleasant, Wu Yuanshuang was stunned: "Gotta do it, I'll do it, can't I do it?"

Wu Yuanqing and mud, Wu Yuanshuang pounded wormwood, there were not many things, but the experimental first made a little, so it was quickly done, and then Wu Yuanshuang also mashed that bit of realgar into powder.

Then mix the mashed wormwood and realgar first, and finally mix the two mixtures in the mixed mud.

It's not physical work to do this, but in the summer, you can sweat even if you move a little, let alone work.

Wu Yuanqing Wu Yuanshuang brothers were sweating on their faces, and Er Ya also threw down the mahjong from time to time and ran to watch and urge, because she was bitten by mosquitoes a few times.

Wu Yuanqing first made a thin stick-shaped mosquito coil, and asked his subordinates to take it to the kitchen and bake it by the fire for a while, and then took it back and lit it in the hall when it was dry.

As the mosquito coil was lit, the curling green smoke rose, diffuse, and a faint smell that was not unpleasant came into everyone's nose, and of course mosquitoes were no exception.

Soon it was visible to the naked eye that the number of mosquitoes flying around the candle shade began to decrease.

Over time, there are fewer and fewer mosquitoes.

"Big brother, the mosquito coil really works, no mosquitoes have bitten me for a while." The effect of the use of the report of the two Ya cheers.

"It just works." Wu Yuanqing smiled and wiped the sweat from his sideburns and said.

The first stick mosquito coil is used for emergency, this thing is the same as the incense in the temple, it doesn't last long, and it lasts for a while. If you make it longer, it will be easy to break, and if you make it thicker, it will be easy to extinguish.

Therefore, what Wu Yuanqing did later was the same disc-shaped mosquito coil as later generations.

With a thin round stick as the center, then roll two coarse mosquito coils into a swirl shape and then dry them, so that a plate of mosquito coils for later generations is made.

The use of mosquito coils is also a special technical work, and Wu Yuanqing in later generations is carefully breaking it every night every summer in order to separate the two mosquito coils.

As a result, one day I saw someone in the WeChat circle saying that there was no need to break a plate of mosquito coils. Just light one of them, and the coil will stay overnight, but it won't lead the other. When one burns out, the other naturally falls off.

After doing so, Wu Yuanqing looked up to the sky and sighed, Nima, who has lived for more than 20 years in vain, it turns out that he can't even use special mosquito coils.

There are not many materials, and in the end, a total of seven plates of mosquito coils were made, and if there were two on each plate, it would be fourteen, but Wu Yuanqing didn't plan to split them, after all, it was simple and he was afraid that it would be broken if he couldn't grasp it.

Their family has enough, the eldest girl and the second girl sleep in one room, Wu Yuanqing and Wang Ziyu or Xiangcheng sleep in one room, and Wu Yuanshuang has one room, so that there are four plates enough for them, and the others can also divide it, the maid Zijuan and Xiao Feng use one plate, and the four guards of the dynasty Ma Han, Zhang Long, and Zhao Hu use the remaining two plates.

At the time of the third watch, the night began to cool slightly, and the game ended, and everyone went back to the house to sleep.

I slept peacefully until dawn without words or mosquitoes all night.

After breakfast, Er Ya had to drag his eldest brother Wu Yuanqing to the field to catch butterflies. couldn't resist this little aunt and grandmother, Wu Yuanqing could only go out of the house with her under the scorching sun.

grabbed all the way and put it all the way, and after a while, he ran from outside the gate of the Hou Mansion to the official road a few miles away.

Just as Wu Yuanqing was holding his breath and concentrating, carefully stretching out his fingers to catch a very large and beautiful colored butterfly, there was the sound of horses' hooves and the sound of rolling wheels in the distance.

Listening to the sound, it seems that there are a lot of people coming, and the speed is quite fast, there should be no walking, either riding horses or cars.

"Caravans? Or is it a big family traveling?"

Wu Yuanqing was stunned for a moment, the big butterfly flew away, and he simply withdrew his hand and walked to the official road to look at the sound.

Soon, a figure appeared in his sight, and the shadow didn't look like the dress of a Tang Dynasty. A little closer, Wu Yuanqing finally saw it clearly, that's right, it is indeed not a Tang Dynasty, fat waist, long sleeves, placket, right long skirt and wide waist, this is the decoration of Tubo and Tuyuhun people.

"Young Master, it may be Tubo, Tuyuhun people, these people are brutal and unreasonable, they often loot in my Tang Dynasty, there are only four of us, I'm afraid it is not good to protect the safety of you and the second miss, should we avoid it." Wang Chao looked at the person from afar vigilantly and whispered.

"Hehe, no need. This is Guanzhong, the hinterland of the Tang Dynasty, not the frontier, and they don't have the courage to mess around." Wu Yuanqing shook his head.