The old man's statement, Zhao Danqing and the second brother didn't believe it at all, if it wasn't for the desired result, he would definitely not be so calm.

"Shall we go in and ask Brother Jiang?" Zhao Danqing whispered.

"Ask a fart, I guess the old man has annoyed Brother Jiang enough, aren't we happy to go and find it...... Pestering the old guy, it's not so easy for him to eat alone!"

"That's right!" Zhao Danqing also laughed: "This old guy's cultivation is too high, when the time comes, I will hug his thigh, and you will grab the food......"

"Hug ...... Hug your thighs?" the second brother stared at Zhao Danqing in a daze.

"That's right, I learned it from Luo Yu! It's quite easy to use, and other tricks can't deal with the old guy...... Okay, let's go, it's hard to find the old guy if he runs away!" said the two of them, and ran after the old man.

Jiang Xingchen didn't know that the thoughts of a few people outside were so complicated, and his mind was full of the use of biogas. How big should the digester be, what should the structure be, how should the pipes be laid......

Time flies quickly when he really invests in a study, and when Jiang Xingchen feels hungry, he finds that it is already dark.

"It's getting dark so soon!" Jiang Xingchen muttered, and he didn't bother to let his soldiers go to the restaurant to get food, so he went to the kitchen to make a little fuss.

When he entered the kitchen, the old man and Zhao Danqing who were hiding in the dark could see it clearly.

"Hehe, I said that I didn't study new dishes, I knew!" the old man smiled triumphantly, but immediately frowned, and the two guys behind him looked like plasters. Holding on to it made him very helpless.

"I'm going to have to find a chance to get out of it in a moment. If you want to grab food from me, you're far behind!" the old man's mind turned sharply. ponder how to get rid of the two for a while.

And Zhao Danqing and the second brother are not in a hurry at this time, just stare at the kitchen, no matter how high your cultivation is, you can't move away......

Jiang Xingchen didn't know that the three foodies outside had been filled with food, so he returned to the room alone after eating and continued to think about the biogas.

As soon as he entered the house with his front feet, the old man moved, so fast that he could not even see the shadow clearly, and swooped into the kitchen.

Of course, Zhao Danqing and the second brother couldn't lag behind, and they also rushed out. If this old guy grabs something to eat and runs, they really can't catch up.

However, when the two entered the kitchen, they found that the old man was staring at the stove in a daze.

"What's wrong with him?" the two looked at the stove in confusion, and suddenly they were stupid, the stove was so clean that there was not even a single steamed bun slag, let alone any food.

"What's going on? Brother Jiang didn't cook just now!" the thought popped into both of their minds at the same time.

"This little soul is weak, and he has been tricked again!" The old man was so angry that he stomped his feet, this situation was either Jiang Xingchen did nothing. I already knew that he was outside and deliberately played with him. Either that, or just finish cooking and eat it all by yourself.

However, there was no special smell of rice in the kitchen, and Jiang Xingchen played his face. He didn't know that Jiang Xingchen just dealt with it casually.

"Boy. Fool me, we're not done!Ancestor, I'm on a par with you, see which of us can survive whom!" the old man said. Turned around and ran out.

Zhao Danqing and the second brother looked at each other, and they also thought that Jiang Xingchen was teasing them.

At this time, Jiang Xingchen didn't know that the old man was in the courtyard. Still writing and drawing on paper.

Since it is not yet known whether biogas can be produced, it is certain. Then you have to build a small digester first. Fortunately, this job does not consume too much labor.

It was already late at night when he drew the pattern of the biogas digester, Jiang Xingchen stretched his waist, twisted his sore neck, got up and threw himself on the bed, and soon fell asleep......

Early the next morning, Jiang Xingchen found a craftsman and took people to the back mountain of Qingshan Village. After all, a lot of animal manure is used, and it can't be implemented in a new town.

Jiang Xingchen led a group of craftsmen away, and the old man who came over early in the morning, Zhao Danqing and the second brother quietly leaned out and quietly followed.

On the way to Houshan, Jiang Xingchen gave the drawings to the craftsmen to read. The craftsmen didn't know what the figure was for, but it wasn't much difficult to build just by looking at the figure.

When he came to the back mountain and chose a good location, Jiang Xingchen didn't stay long. With the drawings, the digester craftsmen can do the job, and it is useless to be there themselves.

After some explanation, Jiang Xingchen took out the black lightning that was reluctant and was tired of Ziyun, and rode straight to the large grassland outside the new town, and he had to let people collect livestock manure.

Jiang Xingchen left, and the three old men who had been following him were a little stupid, should they continue to follow Jiang Xingchen, or just stay here and see what those craftsmen were doing.

"Do we want to chase Brother Jiang?" Zhao Danqing asked.

"Why are you chasing him!" The old man raised his hand and slapped Zhao Danqing: "This kid is very insidious, if you can't do it, you can play us again."

"No, let's be careful enough this time, will he still find ......" Zhao Danqing asked suspiciously while rubbing the part that was photographed.

"What do you know...... The old man just glared, and the second brother spoke: "Let's stay here!" Now that the territory is short of manpower, it is impossible for Brother Jiang to transfer craftsmen over for no reason, there must be something to do!"

"That's right!" the old man nodded and said, "Let's see what these craftsmen do, maybe it's related to new food!"

"The craftsman has a fart relationship with the new dishes...... Zhao Danqing retorted in a low voice! Originally, even if the new dishes are researched, they should be in contact with Tian Sanqi and these chefs, can the craftsmen cook?

But before he finished his words, the old man raised his hand and slapped him again: "Why doesn't it matter, do you remember the roast duck, that hanging stove was not repaired by a craftsman!"

"Uh!" Zhao Danqing was about to be anxious, but when he heard the old man's words, he suddenly became dumbfounded.

As they spoke, the craftsmen were already busy, digging pits and then mobilizing a batch of bricks and cement.......

It was originally very boring to watch other people work, but the old man and Zhao Danqing watched it with relish, and felt more and more that this thing had something to do with new food.

While watching, the two of them also said: "Look at how chic this shape is, with a rounded top and wells on both sides! What do you say about the new dishes?"

"I think it's similar to roast duck, roasted inside!"

"How do I feel like making ham, using a special environment to ferment the meat and make it taste ......"

The two chatted without saying a word, but their curiosity grew heavier, and they were very eager to find out what this thing did.

The second brother was very speechless at the speculation of the two, but he also did not leave, and he was also curious about what this thing was for.

During this period, the old man did not listen to the dissuasion of the two, and secretly ran over to ask the craftsman. Needless to say, the craftsman didn't know the result, but only knew that it was carried out according to the drawings.

As night fell, the craftsmen stopped their work and left, and the three of them set off to return.

At this time, Jiang Xingchen had already returned to the Lord's Mansion and continued to draw the design.

The collection of cow dung and horse manure has been explained, but it will take several days to dry it in order to fully ferment it. This is all seen from TV in the previous life......

In the next few days, the old man and the others turned to stare at Jiang Xingchen again. The construction of the back mountain had been completed, but Jiang Xingchen went there to take a look at the completion, and then ignored this strange building.

After a few days, the old man and the others wondered if Jiang Xingchen was crazy at that time and got such a thing out. Then just throw it aside.

"Old man, give up! Brother Jiang may not have come up with new delicacies!" The second brother persuaded that if there was any delicacies, it would be impossible for Jiang Xingchen to have no movement for six or seven days.

But the old man didn't think so, when it came to curiosity, he was bigger than anyone else, that strange building would definitely be useful, and Jiang Xingchen would definitely not be untargeted.

Sure enough, on the eighth day, Jiang Xingchen set off and went to the strange building in the mountain behind Qingshan Village.

The old man followed behind, and saw Jiang Xingchen tinkering with the pipe sticking out of the top of the building for a while, and then shook his head with regret and sat down next to him.

"What is this kid doing?" asked the old man.

"I don't know!" the second brother's answer was unusually concise.

Zhao Danqing said: "I guess this building doesn't meet the requirements, and the food he studied failed to succeed!"

"It's possible!" the old man nodded and said, "Let's keep watching!"

After a while, Jiang Xingchen stood up and tinkered with the pipe at the top of the building a few more times. Then he went to the well on the left to take a look, but soon frowned and walked away with his nose covered regretfully.

"Look, I say, it's just a study of food!, but apparently it didn't work out, and the taste didn't satisfy him!" said the old man with a smile.

"What the hell is he studying, and when he puts something in it, we don't know...... Why don't we go over and have a look!" Zhao Danqing said.

The old man shook his head violently, but he didn't succeed in looking at anything, and he would talk about it when he finished his research. As for when to put things, maybe it's when everyone rests at night.

The old man made the final decision, and the three of them then returned.

In the following days, Jiang Xingchen seemed to have forgotten about the back mountain, and began to run to the blacksmith workshop frequently. At this time, it was already the middle of August, and the autumn harvest was approaching, and the star collar was becoming more and more busy, especially Shi Wazi, who was responsible for planting, and his heels were hit in the back of his head.

There was no movement for a few days, and the curiosity of the old man and Zhao Danqing became more and more strict. In the end, the two decided to take a look, originally they also called the second brother, but the second brother was called away by Mo Hongxian.

The two of them quickly came to the back mountain, and as soon as they stood next to the biogas digester, they heard the gurgling and gurgling sound from the well.

"Huh, what kind of movement is this?" The two originally wanted to see the pipe on the dome first, but when they heard the movement, they walked to the well, and they remembered that Jiang Xingchen also looked at the well that day......!