Since coming to the Ming Dynasty, Shi Yiwen's days have passed and are free and easy.

But while I was free, I also realized the hard work of the ancients. As the weather got hotter, mosquitoes became more and more rampant.

For Shi Yiwen, night is the most tormenting time for him.

With the increase in cottonseed oil production, soap production has been on track. As for the previous competitors, the previous competition has ended due to negotiations with Tang Ziqi. Soap is becoming more and more popular, and the cottonseed oil production has also reached a new level, ensuring the supply of soap raw materials. As well as the soap factory, the oil mill usually does not need Shi Yiwen to do anything. Seeing that he couldn't sleep well at night, he finally stepped away to solve the current problem that troubles him.

Looking at the wild grass and trees all over the mountains, especially when seeing the vine-shaped shrubs everywhere, a gleam flashed in Shi Yiwen's eyes. These inconspicuous shrubs can not only help him solve the problem, but also bring extremely generous rewards!

Master, what are we doing here?

Seeing the young master staring at the weeds and trees on the mountain, Xiao Lian asked in confusion.

Isn’t the young master trying to buy land? Although this mountain is cheap, it is of no use.

Buy land?

Upon hearing this, Shi Yiwen was stunned at first, then smiled.

It’s not impossible to buy land, but you have to buy land for money. Now we don’t have to spend a lot of money to buy land!

After breaking a small piece of wild vine, Shi Yiwen pointed at the wild vine in his hand and said.

Xiao Lian, look, Master, what I need is this thing. With it, Master, I can earn a lot of money!

Can you make money with it?

Xiao Lian looked at the wild vine in the young master's hand in confusion and asked tentatively.

Could it be a medicine?

Yes, but it’s not an ordinary medicine, it’s an insecticide!

Holding the wild vine in his hand, Shi Yiwen said proudly.

The mosquito smoke on the market now only relies on the moxa velvet inside to smoke mosquitoes, and arsenic kills mosquitoes. Because a lot of moxa velvet is used, it is filled with smoke when burned. As for the arsenic in mosquitoes, it seems to be tiny, but over time, it will also cause harm to the human body.

After igniting the mosquito coils of this era for the first time, looking at the choking smoke, and when he learned that there was arsenic in the mosquito coils made of mosquito velvet, that is, mugwort leaves, Shi Yiwen, who cherished his life, immediately asked someone to hang a mosquito net. Even if it was boring, it didn't matter, but the important thing was that life was important.

Due to the season, there was no mosquito coil found in the supermarket. So I could only find a way to find a way for myself. After reading the book for a few days in the library, I found a relatively suitable plant - the bitter skin vine in a magazine about preventive medicine. This plant is widely distributed in China. The bitter skin vine root and stem skin can extract insecticides and sterilizers.

If you use it, it will basically not cause any harm to people, that is

Looking at the wild trees all over the mountains and the bitter vines mixed with ginseng, Shi Yiwen said to himself.

It may take some effort to collect its stem skin.

In fact, it is not difficult to collect the stem skin of the bitter skin vine. Because many papermaking workshops outside Nanjing use mulberry skin and bitter skin vine bark to make paper, so at the foot of the mountain, there are people who rely on harvesting the stem skin of the bitter skin vine. As long as you spend a few hundred cents, you can buy the stem skin of the bitter skin vine 100 kilograms of the bitter skin vine.

Even the stem skins of hundreds of kilograms of bitter skin vines were dried and picked out impurities. These stem skins were handed over by Shi Yiwen to a nearby papermaking workshop and entrusted them to use hydraulic stone mortars to make the stem skin into fine velvet. The pounded stem skins were used to make paper in the past, but now they are used for other uses.

In the next few days, the charcoal powder transported from the charcoal farm at the foot of Zhongshan Mountain and the ash powder with clay as the main material were sent to the home, and even the mosquito coil mold was made.

After using a copper mold to press the mosquito coil into indentation, baked in the kitchen oven for an hour, after taking out the mosquito coil similar to the mosquito coil in later generations, Xiao Lian Kou Yun and the others were all focused on looking at the mosquito coil on the stone table.

Master, how can you cook such a plate of mosquito coils like a round cake?

This is simple. This mosquito coil looks like a round cake, but it is actually a disc-shaped structure composed of two mosquito coils closely surrounding each other. Just fall down and shake, and then

After dividing this mosquito coil that borrowed the structure of later generations into two plates, Shi Yiwen was quite proud of his own efforts.

In fact, there is nothing mysterious in this plate of mosquito repellent. It is nothing more than mashing the stems of the bitter vine into powder velvet, mixing a small amount of clay, charcoal and skin glue, then pressing it into a plate with a mold, and then baking it in an oven to cure it. A plate of the Ming Dynasty version of the Invincible Mosquito repellent was born.

Well, look, it's divided into two plates, then put them on the bracket and light one end. I guess a plate of mosquito coils should be fine for four or five hours. This kind of mosquito coil does not contain arsenic, so it won't hurt people. More importantly, it's not like the current mosquito coils, which can turn people into African chickens.

Shi Yiwen, who was quite proud, regardless of whether the little maids knew what an African chicken was. He was just showing mosquito coils proudly. The only thing he regretted was that there was no mosquito coil stand made of iron sheets.

As soon as he finished speaking, he heard someone behind him say.

The wild shop mosquito smoke is connected, and the official pine trees are blown long. Every summer, burn mosquito smoke. If you are not careful, you may get out of water. Sometimes, the smoke is big in the house. Before the person can run out, the smoke will burn into fire. The people and the house will be gone.

When he raised his head, Shi Yiwen saw an old acquaintance whom he hadn't seen for a while, Liu Nengde and Liu Zhenfu Envoy, holding a gift box in his hand. But he hadn't seen him for a while.

Brother Liu, are you?

Shi Yiwen hurriedly stood up and said in surprise.

Mr. Shi, thank you, Mr. Shi, for your wonderful work, for your rejuvenation. Neizi's condition has now been cured. When he came back from the capital this time, Neizi specifically told me to thank the young master!

Although he was grateful in his tone, Liu Nengde, who knew that he was grateful and did not express his gratitude, did not continue to say it. Instead, he picked up a plate of mosquito coils, looked at it for a while, and then said.

If the mosquito coil made by the young master is smokeless and can kill mosquitoes, there is a way to send the mosquito coil to the palace. No matter how bad the mansion of Nanjing officials can also be sent in. As long as the powerful and wealthy families use it, as long as the price is appropriate, ordinary people will definitely compete to use it first. By then, the mosquito coils of miraculous doctors will definitely become popular in the world.

During the Wanli period, it was a society with extremely strong business atmosphere. Even Liu Nengde, who was the governor of Nanjing in the Jinyiwei, mentioned business as soon as he spoke. Of course, he said so much, obviously to repay favors. Although compared to that favor, these are not worth mentioning.

Oh? Brother Liu, are you interested in trying it together?

Looking at Liu Nengde curiously, Shi Yiwen didn't expect that this seemingly vulgar man would have thought of such an idea when he talked about doing business.

Let's try it together? What does it mean?

Liu Nengde said strangely. Looking at Liu Nengde who was surprised, Shi Yiwen smiled.
Chapter completed!