"This is... a stone car!?" When Liu Yi's first crane was made, Zhang Fei widened his eyes and turned his head to look at Liu Yi and said.

"You can call it a crane for heavy objects!" Liu Yi shook his head. It took him a lot of effort from the design of the crane to the present perfection. In the huge wheel, people are constantly walking in it to provide strength. The principle is similar to the water wheel made by Liu Yi, and then the force is transmitted to the crane's rocker through two winches, three gears and shafts.

The rocker is composed of two masts, with a pulley set at the top, two fixed pulleys and a moving pulley. The mast can be adjusted up and down according to the height. It was derived by Liu Yi according to the principles of later cranes. There were also simple lifting equipment in this era, but in terms of practicality, not to mention the attributes of load-bearing +35 and solid +34, the crane itself is the most advanced in this era.

"How to use it?" Zhang Fei went up and kicked it twice, looking at the huge object in front of him, and the base was equipped with wheels, but those wheels were now lying flat on the ground, which was useless at all.

"You will know later." Liu Yi did not explain much, saying that the fact that he would never see was more convincing.

The bamboo baskets for loading goods have been installed on the thick and long ropes. The foundation of the city has been dug to date, but the interior is extremely wet. The bottom must be reinforced with cement, wooden boards, and bricks.

At Liu Yi's warning, someone had already put a large amount of cement and wood into the bamboo baskets, and a total of 36 cranes began to run slowly. Some were loaded with goods and some were loaded with people. In Zhang Fei's as the people in the wheel kept moving, baskets of materials were continuously sent to a base of four meters deep.

The craftsmen below began to busy unload goods, or began to lay rammed earth on the ground.

"How heavy is that big basket of goods?" Zhang Fei came to a load basket that had not yet been filled and pushed hard. With his strength, he just made the bamboo basket sway slightly.

"If it is cement, it weighs about 4,000 kilograms!" Liu Yi said affirmatively. In fact, the data he calculated could bear 6,000 kilograms even without attribute support. However, for the sake of safety, Liu Yi chose to weigh 5,000 kilograms when he compiled such bamboo baskets that were raised and lowered.

"Four thousand jin?" Zhang Fei was a little unbelievable, but he looked at the goods gradually filled with the lifting bucket, but did not refute. The weight was about four thousand jin, and looked at Liu Yi and said, "No wonder he spent all his time making this thing. With such a magical tool, it would be easier to build the city wall in the future."

Zhang Fei had never participated in the construction of the city. In fact, the cities that were down today were basically established in the pre-Qin period. In the Han Dynasty for more than 400 years, there were not many cities that were added.

Artifact?

Liu Yi shook his head in his heart. The West had already had the prototype of this kind in BC. Although there were no special equipment in China, some lifting principles were already used. He only designed it based on his experiences in later generations and the materials found in many books that can be found now. It should be more advanced than the Western ones, especially the rollers. In the initial design, Liu Yi designed a winch, which was turned by hand. Later, when building a fishing town waterwheel, he thought of replacing this winch. Is it effective? It is naturally more labor-saving. Just find some civilians to be responsible for walking in the wheel.

In this regard, China is actually behind the West. Now he has made up for this, but the most important thing is the inheritance of ideas and the application of mechanics. This is the fundamental reason. Liu Yi tried to change this era bit by bit with his own strength, not all for the sake of being famous in history. He just felt that since he came to this era, he also had certain abilities and should leave something for future generations.

Of course, it is unrealistic to directly promote the social form from the feudal era to the industrial era with one's own strength. It is still mainly based on human and animal power. Even with systematic help, it cannot be more convenient than the era of electricity or steam engines. The advancement of the era is not a point, but when the entire surface reaches that level, it will naturally evolve.

I hope that this pure theoretical book I compiled would have some inspirational significance to future generations. For more, he would not ask for anything extra.

However, Zhang Fei was obviously very interested in these things. In the next few days, Zhang Fei almost circled around these jacks, and the cement paving was faster than expected.

However, the foundation construction will take longer than Liu Yi expected, and many of these problems are difficult to solve. Cement is not omnipotent. Just by building the foundation of the new city, the dungeon has only built a simple structure. Before it was built, and the drainage system has taken nearly three months.

However, the foundation is well built, the next thing is relatively simple for Liu Yi. He comes to pay his wages on time every day, and then the craftsmen start work, and Liu Yi drives back to the fishing town. Unless there are some problems that craftsmen cannot solve, Liu Yi will stay occasionally. Most of the time, when Liu Yi comes, he will only check the progress and quality of the project, and will not take care of it again.

Early spring has arrived, and the weather here has gradually become much warmer. Lu Lingqi is lying on the recliner made by Liu Yi, squinting her eyes to bask in the sun. The spring of the 15th year of Jian'an has arrived. Although there is still some cold air in the air, it is no longer so cold. When the weather is good, Liu Yi will take Lu Lingqi out to lie on the special rocking chair to bask in the sun.

Beside her, the elderly doctor helped Lu Lingqi take her pulse and smiled at Liu Yi: "Don't worry, Mrs. Fu, my wife's body is quite strong. Judging from the pulse, this fetus will definitely be worry-free."

Lu Lingqi's belly is already very big, and she has to hold it with her hands when walking. Her face is also fleshy. Compared to three months ago, she has gained more than a circle, but the smile on her face has become softer. Hearing this, he looked at the doctor and said, "Maybe it can be seen that the fetus is a man or a woman?"

"This..." The doctor hesitated and looked at Liu Yi with a little hesitation.

When Lu Lingqi heard this, her heart sank. Although the doctor didn't say anything, it was obvious that the answer was not what she wanted, and she looked at Liu Yi with some concern.

"Are you a girl?" Liu Yi, who was working on a model of a curved plow, raised his head, looked at the doctor's expression, and asked with a smile.

"From the pulse, it should be a baby girl, but I am shallow in medical skills, and may not be accurate." The doctor bowed and said.

"Girls are also very good." Liu Yi played with the curved plow model in his hand, but he didn't have much feeling about it. His concept of the past life and the concept of giving birth to a boy or a girl is not as literate as this era.

"I will leave first." Although Liu Yi was laughing, this kind of thing was not a good thing in the eyes of people in this era. He didn't know what Liu Yi was thinking, so it would be better to let go first.

Mrs. Deng gave him a medical treatment. Liu Yi looked at the doctor's escaped back, feeling speechless. He touched his face and looked at Lu Lingqi beside him and said, "Is it so scary?"

"Husband~" Lu Lingqi's mood was obviously depressed, and she did not dare to look up at Liu Yi, and said, "I am useless and cannot continue the incense for my husband."

"According to genetics, parents account for half of the blood in children. In terms of recessive genetics, the blood in children is actually caused by the mother. What's wrong with having a daughter? Our family is not a prominent family." Liu Yi stepped forward, stroked Lu Lingqi's hair gently, and smiled: "Madam, don't worry about this."

"Husband, I..." Liu Yi's comfort did not make Lu Lingqi happy. If Liu Yi was just an ordinary craftsman, perhaps this guilt would not be too great, but Liu Yi is not just a craftsman now. The prefect of a county is highly valued by Liu Bei. He is either Zhuge Liang, Cui Zhouping, or Zhang Fei and Zhao Yun. It is almost predictable that the Liu family will flourish in the future. To put it bluntly, with the value shown by Liu Yi now, even if Liu Bei is defeated, other princes will not neglect Liu Yi.

The revitalization of the Liu family has been a foregone conclusion. Lu Lingqi naturally hopes to help Liu Yi give birth to a son. Now that she has become a daughter, she is naturally lost.

"I told you everything, it's okay." Liu Yi squatted down, pinched Lu Lingqi's slightly fleshy cheeks and whispered in a low voice: "If the lady feels guilty, wouldn't it be enough to have another one after a year or two?"

If it were the past, it might be shy, but this time, Lu Lingqi nodded quite seriously, and had already made up her mind to give birth to a son for the Liu family who could inherit the family business in the future.

Still taking it seriously?

Liu Yi was a little funny and kind, and stood up and pulled Lu Lingqi and said, "The wind is getting stronger, go back to the house and help you wipe your body. The wind stops in the afternoon, and you will come out for a walk."

"Yeah~" Lu Lingqi pointed her head lightly and followed Liu Yi back to the house obediently.

Although I thought, I really couldn't do it at this time. At most I could enjoy it. Today, Lu Lingqi is very well-behaved and even shy, she no longer resists at all.

So, it’s better to be in ancient times. How can men in modern times have such a status?

After comforting Lu Lingqi and sleeping, Liu Yi took the model of the curved plow he made out of the room. After several streamlining and modifications, the curved plow was basically made by Liu Yi. Even if it was different, Liu Yi believed that the curved plow he made was more convenient and efficient than the curved plow in the original world. With this thing, as long as conditions allow, it should be able to feed more people, and it should be possible to make today's agriculture reach the Tang and Song dynasties.
Chapter completed!