In the countryside where Shen Lie lived when he was a child, biogas digesters were a good thing. Almost every household had one, and they were usually used for cooking and lighting.
Considering the technological level of this era, lighting is not very practical, but it is more than enough for making fires, cooking, and heating.
As the thoughts gradually became clearer.
"Um……"
The more Shen Lie thought about it, the more reliable it became, and a clear plan soon became complete.
Plant sweet potatoes!
Then, we can use the sweet potato yield of several thousand kilograms per acre to raise pigs, chickens, ducks and geese. This is an absolutely cost-effective business.
The biogas produced by fermenting livestock manure is then used and can be burned. It can be used to heat vegetable greenhouses and even houses in winter.
Biogas can even be used for cooking.
This way.
A perfect self-circulating ecological farm has been built, and it is not difficult to implement. All you need to do is find a skilled old blacksmith to build a simple gas stove.
This thing doesn't need to be very precise, just an iron pipe and a valve...
When this idea popped up in Shen Lie's mind.
It can no longer be contained.
So Shen Lie stood up and said excitedly: "Brother Tian, please go find some carpenters, bricklayers, and blacksmiths."
Tian Hong was stunned.
Although he didn't understand why he wanted these craftsmen to come to the village again, he still stood up without hesitation and said with a smile.
"Okay, I'll do it now."
Tian Hong was already accustomed to Shen Lie's endless abilities, and he even had some blind confidence in Shen Lie's abilities.
Victor looked doubtful on the sidelines.
Shen Lie smiled and said nothing.
To talk about one thousand and to talk about ten thousand, it is better to make the actual thing and then talk about it.
At night.
In the farm.
The night is as desolate as water, and the night wind blows slowly in the silence.
Shen Lie lay on his back on the bed, listening to the chirping of grasshoppers coming from the window, looking at the dark roof, but his eyes were shining.
He couldn't sleep no matter what.
Perhaps it was because Yun'er's slender and hot body was no longer in his arms, Shen Lie felt a little uncomfortable and forced himself to calm down, but his mind was far away.
That gaze gradually became firmer.
He didn't fall asleep until late at night.
Even in his sleep, Shen Lie was still mumbling to himself: "In the year of great disaster, these sweet potatoes... can really save lives."
The next day, early morning.
Shen Lie was awakened by a burst of noise. He quickly turned over and sat up. He pushed open the half-closed window lattice and looked at the threshing floor not far away.
I saw the arrogant Victor, wearing his white-washed Royal Guards uniform of the Kingdom of Sweden, proudly straightening his back, training his small army of villagers.
The familiar password made Shen Lie smile slightly.
Such a heated scene made Shen Lie feel unbearable, so he quickly put on his clothes, put on his high-soled boots, and walked out of the bedroom quickly.
Then Shen Lie joined the training ranks.
"Whew...drink!"
With shouts and shouts, the villagers armed with short-handled large blades were extremely serious about every move, and each of their strong bodies advanced and retreated in an orderly manner under Victor's command.
Shen Lie's eyes lit up and he secretly praised in his heart.
"Okay!"
Although the standard two-row battle formation was a tactic from the cold weapon era, the big blades radiating cold light were swung around, which really chilled people's hearts.
Although there are not many people, there is a faint air of elite soldiers.
Shen Lie was really excited when he saw it.
Tian Hong and several of his Jin Yiwei generals were also very excited and rushed from the room one after another and began to teach these villagers their swordsmanship and fists.
For a time, the threshing floor of Shenjiazhuang was filled with a masculine and passionate atmosphere.
Feel the blood.
Shen Lie nodded frequently: "Okay, okay."
Soldiers are more valuable than their numbers.
Soon it was time for the sun to rise three poles high.
The villagers had been dismissed. After eating and drinking, they began to work in the fields. They seemed to have no complaints about this ascetic life.
Looks very motivated!
This matter has long been spread in the surrounding villages. The villagers in Shenjiazhuang are all selected from a hundred. Not only are they responsible for food and housing, but they even receive a salary of two taels of silver every month.
Not only can I have enough to eat, but even my whole family can live a good life. Such generous treatment makes these Ming children who are already highly obedient become even more hardworking and hardworking.
Looking at these young people, Shen Lie felt a sigh of relief in his heart. What a good disciple of the Ming Dynasty, but then why did the Ming Dynasty...
Who is responsible?
As Shen Lie's eyes turned cold.
He seemed to already have the answer in his mind. He thought of those shameless, greedy, and sanctimonious gentry, officials and businessmen in the history books.
The cold light in his eyes quickly faded away.
Shen Lie started his new plan.
Building pig pens and chicken coops is simple, just pile them with blue bricks and stones, and digging fish ponds is also easy, but this biogas tank requires some knowledge.
First, Shen Lie chose an open space at the foot of the back mountain, planned a dry and not prone to water seepage, and then called the villagers to start digging holes.
Seeing the villagers sweating profusely, Shen Lie took the blueprint in his hand and started thinking about it. It was very simple to build a biogas digester, but it required high building materials.
Naturally, there was no concrete in this era, so the city walls were built with the rice-mixed soil often used in imperial tombs, which was not bad at all.
It will be built according to the standard of ten meters long and wide, and ten or eight large biogas pools will be built...
Shen Lie estimated that as long as there were enough raw materials, it would not be a big problem to provide lighting, water boiling, cooking and even heating for the vegetable greenhouses throughout the village.
After the fermented residue in the pond is taken out, it can also be used as fertilizer, feed, etc.
As Shen Lie explained his idea clearly.
Tian Hong was shocked and quickly pulled Shen Lie aside and said softly: "Brother Xian, isn't this a pit where you boil saltpeter?
Shen Lie asked curiously: "Salt pit?"
Tian Hong nodded, stretched his neck and looked at the methane tank being excavated, and exclaimed: "Yes... this is how the fire salt is boiled."
Shen Lie was speechless for a moment, and then touched his head. He had never thought about whether the biogas pit could be used to boil fire salt.
but……
Soon Shen Lie became as if nothing had happened, but he was thinking silently in his heart.
"Okay!"
This biogas pool is indeed a treasure, and it has one more use.
It can also make nitrate.
Although Tian Hong felt a little guilty, seeing this wise brother acting as if nothing had happened, he had no choice but to grit his teeth and pretend that nothing happened.
Time flies.
Three days later.
When night falls, darkness envelopes the Yanshan Mountains.
The hills behind Shenjiazhuang are still brightly lit.
Thanks to Shen Lie's heavy reward, the construction progressed quickly. Half of the pig pens and pig houses in the back mountain were built, and three large biogas digesters were dug.
Several plasterers invited from the capital are making composite soil to strengthen the bottom and four walls of the biogas tank.
Not far away, several blacksmiths dug a small earthen kiln, threw various waste materials in and burned the molten iron. When the bellows were pulled up, choking smoke filled the air.
