An old man and a young two went up the mountain to pick, dig and chop and make a big basket of messy things, but fortunately this time the two went up the mountain and came back with a complete old face. Yi Niang has been worried about Liang Chuan these days, the earth bee is not a joke, and the cow dung is not life-saving every time, many children in the township are greedy for food, and the idea of going to fight the soil honey bee is cold.

He Baozheng's wife Wang also hated her husband for being so cynical, and he couldn't make money, and he was the most capable of fooling around every day. It made He Bao feel like he was stabbed in his back and restless, but fortunately he went with San Lang, and he didn't look at the face of the monk to see the face of the Buddha, and he swallowed it in his stomach.

Liang Chuan was much more careful in doing things, first he took the wild peach to bribe a few women, making them unable to close their mouths, He Baozheng was empty-handed, with sweat stains on his face, and could only look at Liang Chuan in embarrassment.

Cut down branches of nan, camphor branches and wormwood should be exposed to the sun first. Because all the materials are almost mixed into the mosquito coil in the form of powder, the water contained in the wormwood nanshu and camphor is too high, and it is inconvenient to grind it into a powder state.

There are not only bamboo poles but also some wild vegetables in the yard now, and everyone doesn't understand why Liang Chuan is so obsessed with wild vegetables. Liang Chuan put the dehydrated nanshu wormwood in the yard, and took up a lot of space. It turned out that when a few people in the Liang Chuan family used this courtyard by themselves, they still felt that it was quite empty, but later when there were many people, the place gradually became insufficient.

It takes a while for these things to be exposed to the sun, and the kudzu root has to be ground into starch. This process is more troublesome. The starch content in kudzu is very high, almost more than 10%, which is considered a high-starch vegetable, and it can also be regarded as traditional Chinese medicine.

The starch of kudzu root plays the role of wet material solidification, not for combustion, it is a solid powder, and it depends on starch to be shaped.

The sediment outside the kudzu root should be washed first, otherwise after grinding, the sediment on the rhizome will be mixed into the powder, contaminating all the materials, and will also have an impact on combustion.

Washed kudzu is a bit like lotus root, and it is also gray and gray. The rhizome of the kudzu is a little thick, and the hardness is not low, Liang Chuan took a wooden stick and smashed the kudzu one by one, looking at He Baozheng was dumbfounded.

"Are you going to break these up?"

"yes, do you have a solution?"

"Isn't it enough to get it on the stone mill and grind it, are you going to knock it like this until next year?" He Bao looked at Liang Chuan's eyes, and his heart was sudden, no, it was so unreliable.

Liang Chuan had never used a stone mill, where would he know that there was such a convenient tool, and he smiled and said, "I forgot." "I want to fool the past.

He Baozheng's house happens to have a stone mill, and there is a cow frame on it, which is pulled by animal power at first glance. This kind of stone grinding also has a lot of benefits, grind some beans and wheat by yourself, and turn it into powder after a few turns.

Liang Chuan put the kudzu on the stone mill, He Bao was about to lead his old green cow to pull the mill, Liang Chuan stopped him, just push it a few times by himself, and it took no cow effort.

Liang Chuan's divine power is really not covered, the stone mill that is thicker than a bucket, holding it with both hands, took a horse step, swayed back and forth a few times, and then pushed it up. This kind of heavy object is laborious to start, and it turns up, and that's it, and for Liang Chuan, if a tiger of several hundred catties is carried, if the road is easy to walk, it can run, a small stone mill, it is not like playing.

"If you kid open a mill in the future, you can sell coolies and make a lot of money." He Baozheng looked at the divine power of Liang Chuan's body, and he was really envious and jealous.

"What kind of mill to open, isn't it easier to make money with your brain." Liang Chuan replied.

"I don't have the brains you have."

The kudzu root was very hard, but under the crushing of the stone mill, it could not be broken anymore, and the milky white juice flowed down. He Baozheng hurriedly took a bucket to pick up the kudzu juice.

Take another filter cloth, ordinary coarse cloth is about the same, the hole should not be too dense, and it should not be too big. Put the kudzu residue in, pour the water into the filter cloth, filter the kudzu residue several times, and let the kudzu water in the bucket settle down, and the starch will sink to the bottom of the barrel.

Tomorrow, the water on the bucket will be controlled, and the starch at the bottom of the bucket will be dug out to dry, which is the real kudzu powder. This method is actually the sweet potato flour slices that Liang Chuan learned from his own home.

During the Great Song Dynasty, sweet potatoes were not introduced, but later generations were many precious rations in difficult times. Industrious rural women also grind the sweet potato, filter out the sweet potato powder, after the sweet potato powder is dried, cut into slices and then dried, it is pure sweet potato powder, now there are fewer people in the countryside, and it costs a lot of money to taste the taste of childhood here.

Liang Chuan also thought about using kudzu to make a fortune, if this product is really a nutritional and health product that everyone likes in the future generations, grinding it into powder and making a few advertisements, the sales volume will definitely exceed the flickering magic medicine of the god of brain platinum ant power. But there are too many kudzu in this era, just like the wild vegetables on the roadside, no one eats wild vegetables, and there is no need to process them, and a series of processes of kudzu are much more troublesome in comparison.

These are the main materials for making mosquito coils, and they are also the key to achieving the effect of mosquito repellent, but mosquito coils also have an important performance, that is, they must last, if they can only be burned for a while, the mosquitoes will come back after they run away. A good plate of mosquito coils should be burned for at least three or four hours, and people in this era fall asleep early at night, and four hours is considered less, but there are many fewer mosquitoes after the early morning.

For mosquito coils to burn sustainably, another important ingredient is wood chips. In this era, there were no wood chippers or pulverizers, and wood chips were hard to come by. But it's not that you can't get it, you can also get sawdust by hand, it takes a lot of manpower, you say that a person with a saw for a day has nothing to do and saws wood like crazy, how many sawdust can you get.

When he got off work in the evening, Liang Chuan went to ask Zhao Jinyu to see if he could get sawdust faster. Zhao Jinyu also shook his head, although they also did some carpentry work in the place where they built the house, there were not many sawdust sawed out. However, he told Liang Chuan about a place, where there may be a lot of wood chips, a lumber shop in Xinghua, and a place where carpenters work.

That's right, why didn't Liang Chuan expect that sawdust would naturally be more where there is more carpentry work. Liang Chuan looked at He Baozheng and asked with a thief smile: "Lao He, you are more familiar, why don't you go and see if those timber shops sell wood chips?" ”

When He Baozheng heard this, he knew that he was going to run errands again, but this matter was also a good intention of San Lang, and it just so happened that he really didn't want to be tired of being with those village women anymore, and he had to run if he didn't want to run. "You call me every day."

He Baozheng, the timber workshop in Xinghua, really rarely came, and he didn't need anything himself. The furniture at home can be used for decades, and you don't need to come here if you do it yourself. He didn't know the people inside, and he was a little apprehensive when he entered the door, but as soon as he entered the door, he saw the ground full of debris, swept aside, piled up like a hill.

The carpenters found He Baozheng who had entered the door and asked, "Brother has something to do?" ”

He Baozheng was a little embarrassed, and said with a smile: "I don't want to fight anything, but I want to buy some sawdust powder, little brother, is it convenient for you." ”

The carpenter's apprentice snorted coldly and said with a smile: "It's quite fresh, these things can only be fertilized, I didn't expect anyone to ask for it." ”

The carpenter is also very strange, there are too many sawdust, they have to saw dozens of square meters of wood every day, the ground of the whole workshop is sawdust, and the apprentice has to clean it after work every day, and now these sawdust are piled up in the corner of the wall and are almost a hill, and no one will ask for it, so they can only bury it in the ground as fertilizer.

"This one has it, if you want it, come and sweep it yourself. There are too many in the workshop, and no one wants them. The master carpenter thought to himself, and he saved a lot of labor costs, and a few apprentices arranged who would sweep the sawdust every day was often not entertaining.

He Baozheng didn't expect it to be so easy, "How much does little brother get here?" ”

"I don't charge money, it's the scraps of manure anyway."

He Baozheng hurriedly collected a few cloth bags and packed a whole oxcart of sawdust back. Before leaving, the little apprentice asked him if he would go back and forth with these rags, and he came to collect them, so that a few of them would be so tired from cleaning. He Baozheng patted his chest, he will definitely come again, this is just the beginning, and there will be more sawdust in the future.

There are more things in the yard, and the courtyard of the ancestral hall is full of sawdust, Liang Chuan thought that he would get a few catties at most, and he had to find a way to do the rest, but he didn't expect He Baozheng to get an ox cart.

These things were dried for two whole days, and on the third day, Liang Chuan began to experiment with mosquito coils.

Mosquito coils are swirl-shaped, and molds should be made so that the efficiency of mosquito coils will be high. Liang Chuan dug up some clay from the field, made a mold, dug out the shape of a mosquito coil in the mold, and then put it on the fire to roast, and burned the clay mold to harden it, so that it could be reused.

Kudzu has been made into starch, and after two days of exposure, the particles are quite delicate. A little more sawing of nanmu powder and camphor powder, the proportion is very small, far less than the number of sawdust. The two herbs of Atractylodes atractylodes and dried wormwood are then pounded into fine powder with a stone spoon, and several main materials are basically formed.

Pueraria lobata starch plays the role of stereotyping, and then add some pine resin into it, the best thing is to be rosin, which contains rosin, but now Liang Chuan has no means of purification. Pine resin can not only help combustion but also play a role in shaping, add a little water to stir several materials together, fully stir can get the form of thick paste, the amount of sawdust is the largest, pressed into the mold, put in the mold to dry, slowly buckle the mosquito coil out, a plate of mosquito coil is successful.

"San Lang, what's the recipe ratio in this thing?"

"I don't have a bottom in my heart, let's try the effect at night, I just didn't add much to everything, most of them are sawdust, these raw materials are more difficult to get, can't be wasted, we want to be able to achieve the effect and save raw materials."

In ancient times, there were also people who would make mosquito coils, they added realgar powder and arsenic to mosquito coils, and used toxicity to kill mosquitoes, but people who did this for a long time will also be chronically poisoned, killing 1,000 mosquitoes, and self-damage 800 without tasting loss. At present, the resistance of mosquitoes to wormwood and fragrant nan is still quite low, and these materials should be able to repel mosquitoes.

Later, when pyrethrum was introduced in China, the effect would be better and more environmentally friendly, but the wheel of history had not yet come to that point, and the pyrethrum introduced by the island country would appear in the late Qing Dynasty.

After night, the chorus around the ancestral hall became louder and louder, and all kinds of frog chirping and unknown cries in the ridge were endless, one higher than the other, both rhythmic and audible. But there will also be a lot of mosquitoes holding concerts, hovering all over their heads, and they will swoop down and stare at the flesh and suck two mouthfuls of blood.

Two old boys were in the courtyard under the starry sky, sacrificing themselves to feed the mosquitoes, and Liang Chuan wanted to make up for the great cause of chopping firewood that fell during the day. After the mosquito coil was basking in the sun for a long time, the water evaporated almost completely, it was deducted from the mold, and in his hand, Liang Chuan lit the mosquito coil with fire.

He Baozheng was thinking about whether this thing could succeed, and he was already a little anxious, coupled with the commotion of mosquitoes, he was even more restless. Liang Chuan lit the mosquito coil in his hand, and the fragrance of nanshu and camphor trees rushed to the façade, with a hint of pine fragrance, which covered up the dry smell of burning sawdust. The white smoke slowly rose upward, the mosquitoes were far away from the white smoke, like poison, they didn't dare to touch it, and the bites of the mosquitoes around them were instantly relieved, but the amount of raw materials added was not enough, and the mosquitoes occasionally took risks and tried their best to suck two mouthfuls of blood.

"Next time, add some more powder, and the mosquito repellent effect of this mosquito coil will be very good. You can take this plate of incense to the room and put it in the evening, and tell me how the effect is tomorrow! ”

He Baozheng walked away with mosquito coils in his hand, Liang Chuan looked at his back and sighed, if only he had studied engineering, he would have made a few more things, and he would have developed a long time ago.