I build nuclear bombs in the giant world

"You seem to have gotten a little taller." Asuka looked at Ian who was facing her across the mirror.

"The growth period is relatively fast." Ian said.

Although only a few days seemed to have passed on Asuka's side, for Ian, it was almost a full year.

"Are you a real person or my dream?" Asuka hugged her chest: "I have been dreaming about you for several days in a row. I even went to the hospital for a checkup, but nothing was found."

"It's a real person."

"Really?" Asuka squinted her eyes and looked at Ian: "Forget it, instead of that, you have to learn the design of the waterwheel. I memorized that thing, so you should be able to see it clearly."

Asuka stretched out her hand, and a piece of paper appeared in her palm. This is the world of dreams, so they can change something with their consciousness.

"Thank you." Ian leaned close to the mirror and quickly memorized the design.

His memory is very good, and in reality he has drawn a basic template in advance. The only things that need to be memorized and supplemented are the precise data, such as the length and proportion of the rotating shaft.

The water wheel is not complicated. It is actually a wooden wheel placed in the middle of a frame. The power of water is used to make the wheel rotate. He has learned how to put the wheel and the frame together last time, but he does not know the precise data.

Debugging data is a very complicated process. Ian does not have the cost or time to do research and development. With the data on this finished picture, he can build the waterwheel before the end of spring.

"I remember you said that your world is like the Middle Ages. Do you make waterwheels to make money?"

"It's to save people. If a waterwheel is made, tens of thousands of lives may be saved."

"Is it that great?"

"Asuka, although it troubles you to say this, I want to learn the skills of iron smelting and plow making next time we meet. I hope you can teach me. Please, this is really important to me."

Ian woke up. The first thing he did after getting up was to take out the paper and pen and quickly record the data he had written down on the paper.

"The axis of the bobbin cart is at 45 degrees."

"The runner should be immersed in water for 0.8 meters to 1 meter."

"The water channel is located about 1 meter behind the axis of the drum truck."

He wrote down the data, took out his unfinished design drawings, and scribbled and drew furiously.

He sat at his desk all morning, perfecting the design.

Armin came by once in the middle. Seeing how attentive he was, he put a piece of bread next to him and left quietly.

"It's done!!!" In the afternoon, Ian finally completed the design drawing of the waterwheel.

He excitedly took the piece of paper and went to Allen's room.

"The design drawing of the waterwheel! It's done!" Ian showed the paper in his hand to Allen and the others.

"This... is so awesome!" Armin carefully considered the design: "If it can really rotate, it will be able to irrigate the fields day and night!"

"Yes, as long as we can promote it, this year's food production will definitely increase!" Ian nodded.

"Armin, this is the list of carpenters." Ian took out a piece of paper from his arms: "This is the carpenters I selected last time. There are four carpenters in total. Let's recruit them together."

"Eren, Mikasa, please stop making gunpowder for the time being. You and the other children go to observe the reclamation of farmland. Find a few men and women you know and ask them to come to our place to help. Tell them that they can do it in one day. Get 5 copper coins and say it was Mr. Hannes who called you.”

"We're going to have the waterwheel model built within this week!"

"Okay!" Allen clenched his fists: "Mikasa, let's go."

"Yeah." Mikasa followed Allen out.

Ian and Armin went to visit carpenters in the pioneer area one by one. Two of the four carpenters had taken orders to make furniture for others, so they rejected Ian's invitation.

Ian directly used the money offensive: "Mr. Carpenter, you don't want this gold coin to be stolen by others. It doesn't matter. It doesn't matter if the guests over there are delayed for a few days. They won't be discovered."

He called the four carpenters to the studio, and Allen also called people over.

"They are all our former neighbors." Allen said: "My father used to be a doctor, so he knows many people. Don't worry, they are all good people."

In the evening, the construction of the waterwheel finally started.

Although he hasn't contacted Hannes yet, Ian has already begun to borrow Hannes' name. There is no way, the child is really unconvinced. If he says that he has to do it himself, the workers and carpenters may not be honest. Instead of working, he would investigate where his money came from. In serious cases, he might even rob him directly.

After all, the current pioneer land has only been established recently and is not yet very stable.

He told these people that this was a job entrusted to Mr. Hannis by the government, to make a farm implement called a water wheel, and to suppress the workers in the name of soldiers and the government.

"Your salary is paid by Mr. Hannis. Since he has been busy with important matters recently, he entrusted us to help. I hope everyone can work together to build the waterwheel as soon as possible."

No one doubts Ian's statement, because he spent a lot of money. In their understanding, children who are also refugees will not have such money. It must be from the government's allocation.

“I didn’t expect the government to actually care about us.”

"I've seen the design of that farm tool. It's very impressive. It must be the work of a certain master."

"Come on! We will definitely survive within the Wall of Rose!"

The workers' faith ignited, and Ian struck while the iron was hot and called the adults to pick up axes and chop down the trees.

The first night they carried the wood up the river, and the next day a dozen or so people began planing the wood, making the various parts, and making the shaft out of hardwood and grease.

Allen, Ian and others were all in the wood-planing team.

The construction of the waterwheel was in full swing, and in the evening of the next day, they set up frames on both sides of the river.

Rotary drum, water trough, bucket.

The parts were assembled one by one. Under Ian's money offensive, the workers worked day and night. This newly formed team, under the leadership of Ian, quickly became a rope.

The third day and the fourth day

At noon on the fifth day, they finally assembled eight large floating bars, and ten people worked together to assemble the large wheel on the shelf.

With a teeth-searing squeak, all the water deflectors were assembled.

The workers let go and the water wheel started to rotate. Under the momentum of the river, the water in the river was scooped up bucket by bucket, and then dumped when it was turned upward. The water flowed along the gutter and onto the bank, slightly lengthening the gutter. A few can be used to irrigate the fields, and can also be used to turn grinding wheels to facilitate residents to obtain water.

Everyone stood aside and looked up at this big wooden guy, expressing heartfelt admiration.