Yao Changsheng ran rapidly on the winding and rugged mountain road, went down the mountain and went up the mountain, which made him exhausted.

Standing in front of Tao Qini, he was sweating heavily and panting, "Ni'er, come to me." He pulled the arrow sleeve and wiped the sweat on his face.

"You ran all the way." Tao Qini looked at him as she breathed quickly, and handed him the feather fan on the stone table, "Give it!"

"I ran over after receiving your message." Yao Changsheng shook his feather fan vigorously, and sat on the stone bench.

"Don't be so anxious." Tao Qini said embarrassedly with apologies.

"I'm afraid you have something to do?" Yao Changsheng looked at her worriedly.

"It's so easy to ask for leave." Tao Qini looked at him in surprise and said, "Is the military camp so casual?"

"General Chu knew that you were looking for me for the sake of the water truck, so he specifically told me to put the water truck first and let me come and go freely." Yao Changsheng shook his feather fan and looked at her with his dark and translucent eyes.

After more than two months, the courtyard has been taken care of by them in an orderly manner.

Because of the pumpkin planted above her head, the seedlings had climbed onto the shelf, and the mottled sunlight gently sprinkled on her face.

After more than half a year of rest, the exquisite and perfect lines look soft and beautiful.

"When it comes to waterwheel, hehe... that... do you know what to do?" Tao Qini looked at him and said.

"Are there illustrations drawn on the farm books?" Yao Changsheng raised his eyebrows and looked at her.

"Only the frame diagram, you can't see the core internal parts." Tao Qini looked at him and said.

"There is a gear inside!" Yao Changsheng looked at her and said hurriedly, "The rotating gear." It's okay to draw a weapon to make a picture, it's familiar to me. I have seen this water truck myself, but I really don't know the specific ones.

"I know, I'll finish this matter, you can leave now." Tao Qini looked at him with clear eyes.

This is under his name again, "Hey, I'm not hot yet? Just drive me away." Yao Changsheng said unhappy when he heard this.

"Then it's up to you." Tao Qini looked at him indifferently and started drawing a waterwheel on the wooden board with a charcoal pen.

Yao Changsheng frowned slightly and looked at her and said, "Didn't I give you a set of pen, ink, paper and inkstones."

"The brush is too soft, I can't use it. The words are like dogs crawling." Tao Qini looked at him and shook her head hard, and said embarrassedly, "Rice paper is too expensive, I can't bear to leave."

"You!" Yao Changsheng looked at her with deep eyes, "If you use it, I will wrap my pen, ink, paper and inkstone on me."

"It's better to draw a design drawing like this." Tao Qini said, raising the burnt bamboo stick in her hand and said, "It's hard enough!"

"If you want to say this, the brush with fine brushes is harder." Yao Changsheng looked at her holding a bamboo stick and a wooden ruler and drew the appearance of the water wheel in the blink of an eye, "So amazing!"

"Average, average." Tao Qini said modestly, "Look at what you learned when painting a crossbow."

Yao Changsheng's mouth twitched when he heard this, "You don't need to be so polite when you and me!"

"I want it, I want it." Tao Qini looked up at him and said, "I often say this, and I believe it when I say it, so I won't say anything."

"You are like this?" Yao Changsheng looked at her hesitantly and said in a low voice, "Are you unwilling to give up? It's obvious that the achievements are yours."

"I don't care about that false reputation." Tao Qini put down the bamboo stick in her hand, looked up at him and said, "It's you, I'm sorry to copy the books you don't like to read."

"Who said I don't like reading it?" Yao Changsheng immediately retorted, "I copied those agricultural books, medical books, and mathematics. I feel like I was in my previous life..." I was upset. She just reminded her not to be slutty. She came first, and looked at her with a normal expression and said, "I have been reading books for so many years, and I want to calm down and do something practical and helpful to the people." Looking at her with bright eyes, "Don't look, it's just a small waterwheel, and there is a lot of numerical knowledge involved."

"Hmm!" Tao Qini nodded after hearing this.

Although it is a small water truck, it involves more profound mechanical knowledge, such as buoyancy and leverage principles.

The total length of the pedal waterwheel drawn by Tao Qini is more than 5 meters, with a pure wooden structure, and not even a single iron nail is used.

The body of the waterwheel is equivalent to a semi-closed long wooden box, with openings at both ends, absorbing water at one end and water at the other end.

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Inside the wooden box are small square pieces connected at equal distances to the movable wooden connecting rods. There is a rotatable shaft with wooden gears at each end of the wooden box, and the small pieces on the movable wooden connecting rod are embedded just in the gears.

The thick shaft at the end of the water is sealed inside the water truck, while the thick shaft at the end of the water truck is crossing the head of the water truck, and the length of each side is more than 100 cm. A row of foot pedals are evenly inserted on the thick shaft at the end of the head.

If the thick shaft rotates, the small wooden blocks in the water wheel will rotate very coherently. If the water-absorbing end is placed in a river or a pond, the water will be continuously lifted up as the wood blocks rotate. This principle of water extraction is very similar to the principle of making film films. They both interpret the scientific principles of temporary retention and continuousness.

"Are you planning to do it now?" Yao Changsheng asked as he looked at her.

"Well! Make it before summer harvest." Tao Qini looked up at him and said seriously, "After harvesting wheat, it is planned to plant sorghum. If it doesn't rain, it will have to be watered by manpower." After the words came, he sighed.

"Why are there any problems?" Yao Changsheng asked as he looked at her troubled.

"With such a hard work, the yield per mu has increased by 30 kilograms, which is too little." Tao Qini said with extreme depression.

"Then how much do you want to produce per mu?" Yao Changsheng looked at her with interest and asked with a smile.

"Of course, the more, the better, the yield per mu is 1,000 kilograms." Tao Qini said with a smile as she looked at Shen who was walking in.

Shen walked quickly to Tao Qini with a bamboo basket and stretched out her hand. The dust was covered with soil, so she put the back of her hand on her forehead, "Don't burn it!"

"Mom, I'm not sick." Tao Qini said with a brush away her hand.

"Why are you talking nonsense when you are not sick?" Shen said with a funny look at her, "How is this possible? I am very satisfied with the growth of wheat now and can be kept until it is taken back home." He put down the bamboo basket in his hand, closed his hands and looked at the cloudless sky, saying, "I'm thankful."

"Mom, sit down." Tao Qini pulled her down and looked at the wild vegetables in the bamboo basket on the ground, "You are going to dig wild vegetables again."

"Yeah!" Shen nodded and looked at her and said, "The wild vegetables are freshest now."
Chapter completed!