Lu Pheasant, who returned home from the Qin Palace, was still a little strange, and when he visited the Queen Mother with Qin Zheng that night, the atmosphere was always a little strange. The Queen Mother took care of herself as always, but King Qin was distracted from time to time, as if there was some problem that needed to be solved. She thought that she couldn't do everything, and some things had to be figured out by Qin Zheng himself, not to mention that maybe he was thinking about who to hire to sleep at night?

Lu Pheasant's life was finally much more stable, except that his father and brother were often absent at home. It's not that she can't go to the Chinese Academy to enroll, but it's just that she is always a little afraid to be with a bunch of children in her eyes, and she naturally teaches Lu Pheasant and Lu Changjiao in person by Lezi on weekdays.

Because she had been on the mission for a long time before, Lu Yan almost forgot that she had such a sister, so she had to let Lu Pheasant spend more effort to get close to her sister.

"Sister! Mei! Come with me and see one of my new fun things. Lu Changjiao broke into the house only to find that not only Lu Pheasant and Xiaomei were there, but Le Zi also looked at him with a surprised face.

She greeted her mother first, and after seeing that the fun was permitted, she pulled Lu Pheasant to the backyard. Lu Pheasant saw that there were large and small wooden wheels piled up in the backyard, and teeth were carved on the outside of the wheels. I don't know what she's going to do with this, so I have to look expectant as she directs the servants to assemble the wheels.

A large wheel with its left side perpendicular to the ground appeared in front of him, followed by a wooden shaft with its head tightly in line with the center of the wheel on the left. The other end of the shaft is connected to another wheel by some inclined teeth, and the complex wheel finally drives the bottom shaft perpendicular to the ground. Chang Ji personally turned the largest wheel on the left, and a wonderful thing happened, all the large and small wheels and wooden shafts turned.

The wooden shaft at the bottom was spinning even faster, and Chang Ji stared at Lu Pheasant with glowing eyes, hoping that his sister could guess what she wanted to make.

"If the left side can be driven by the current, then the wooden pole that rotates in place at the bottom may be able to connect to a stone mill. Did Sister Imagine a stone mill propelled by water power? Lu Pheasant looked at the non-stop running machine, and his eyes gradually flashed with a light similar to that of Sister A.

"Not only that, but I also thought it could lift water." Chang Ji was even more overjoyed when she saw that Lu Pheasant understood her thoughts, and asked the servants to assemble the rest of the parts.

Finally, the large wooden wheel on the left is full of small wooden buckets, which are fixed on the wooden wheels at an oblique angle to the ground. On one side of the large wooden wheel, a zigzag wooden plank is placed off the ground, like a farm canal.

Lu Changjiao barely suppressed her joy and introduced to Lu Pheasant: "When the water impulses the wooden wheel on the left, the water will also be lifted up by the wooden wheel, and the wooden wheel rotates, and the water in the wooden bucket will flow out obliquely. If you find the right planks to catch the water, you can bring the water into the farmland, and the longer the planks, the farther the water can flow. How is it? ”

"It's amazing! How did Sister come up with it? Lu Pheasant instantly realized the significance of such a tool, and she suppressed her urge to go to King Qin immediately, and asked Chang Ji carefully.

At this moment, Zi Changji's face was flushed, and she said hesitantly: "There are metal gears at the back of the carriage at home, which can be used for braking. I took it down and studied it for a few days before I realized that the gears could be carved into the side or on the wooden handle. And then it all came together and that's what you see now. ”

"Sister will definitely be able to leave history with the name of this thing, and this thing is extremely useful. How about Sister come with me to see King Qin? Lu Pheasant excitedly took Chang Ji's hand and praised it.

"Why don't you do a good job of the small stone mill at the bottom and then show it to King Qin?" Lu Changjiao somewhat understood Lu Pheasant's mood when he made a cone. If Lu Pheasant knew that Chang Ji thought of her like this, she would probably die of shame, after all, the rice tool was still copied by her before she saw it.

A day later, Lu Pheasant entered the palace with Changji. It was the first time for Chang Ji to enter a palace of this scale, and she was a little trembling, as if the air was full of majestic royal energy. Lu Pheasant had no choice but to appease him more, and Chang Ji gradually adapted to the solemn environment.

Under Lu Pheasant's strong request, the guards had to carry the models of the two and follow them personally. There is living water from the Wei River in the Qin Palace, and after seeing the Queen of Qin, you can also show it to him as soon as possible.

Lu Pheasant and Chang Ji entered the hall and found that Qin Zheng was practicing swordsmanship, and the two of them saw that he was very engaged, so they had to stand quietly and wait. Qin Zheng originally still had some resentment towards Lu Pheasant, but thinking that since he was much older than her, it was really bad to worry about a child. When he practiced swords, he didn't see the two of them standing together waiting, and when he looked at the similar appearance of the other person, he guessed that it must be Lu Pheasant's sister.

After all, he couldn't bear to keep the two of them waiting for a long time, Qin Zheng hurriedly accepted the recruitment and inserted the long sword into the sheath. He took the handkerchief handed by the palace maid on the side, and asked while wiping his sweat: "Didn't you introduce your sister to the widow?" ”

"That's right, if you say that the previous taper can save a hundred times the effort, but the things made by my sister can save ten thousand times. Please also take a look. ”

General Qin Zheng looked at Lu Pheasant suspiciously, her eyes flashed with a dazzling light, making people unconsciously want to believe her. Chang Ji had never seen a king, and she was about to fall to the ground when her legs were weak when Qin Zheng scrutinized, and it was a little difficult for Lu Pheasant to support her behind her back.

"Then go and see it, and hope it does what you say it does." Qin Zheng took them to a man-made river in the palace garden, and watched Chang Ji and Lu Pheasant ask the guards to put together strange tools.

Chang Ji looked at Lu Pheasant nervously, Lu Pheasant smiled and asked the guards to pull out the wood chips that were stuck in the wooden shaft, and a wonderful scene appeared in front of Qin Zheng's eyes: the water flow drove the wheel bucket in the water, and the water was lifted by the wooden bucket, fell down on the other side, and poured it down the wooden board to the ground not far away. On the other side, the wooden wheel and the wooden shaft are driven, and the stone mill under the bottom is also rotated. It's amazing that it doesn't require a single bit of manpower.

Seeing Qin Zheng's expression of amazement, Lu Pheasant couldn't help showing off: "What does the king think of this thing?" Is it a hundred times better than a pedal cone? Wherever there is a river, it can be built to carry water and grind grain, if it is easier to grind the stone style, it can also sharpen weapons, and the water bucket can be replaced with a cloth sail and the wind can be used in a place where there is no water. ”

Qin Zheng slapped his thigh and couldn't help but praise: "Great goodness, this thing is wonderful." ”

When they returned to the main hall again, Qin Zheng no longer dared to underestimate Changji. It's just that his burning gaze made Chang Ji sit still, and he was glared at by Lu Pheasant a few times before he retracted slightly.

"I wonder what reward you want?" Qin Zheng felt that Qian Jue was the most concerned thing that ordinary people could think of, he looked at the little girl who had not yet reached Xuan, and thought that maybe she would let him set a good man for her first.

Lu Pheasant didn't ask Chang Ji what she wanted at the beginning, but she said that she was only willing to study machinery, and asked the king to fund her to support her in studying flying arts. At this moment, it is really inappropriate to remain silent. She looked at Chang Ji's embarrassed face, and knew that she didn't know if King Qin was willing to agree to her request.

"I heard that there are hundreds of workers in the king's Shaofu, and my sister once made a wish to fly to the sky, but I don't know if the king may allow her to enter the Shaofu and borrow the resources of the Shaofu to develop machinery and flying equipment?"

"Nothing is necessary. Just 'flying'? How can a man fly! Qin Zheng agreed, if this girl can develop some more machinery, why not hand over the entire Shaofu to her? It's just that he doesn't believe in flying in the sky, except for mosquitoes and insects, there are only birds and birds that can fly in the sky.

"A gentleman is not different, and he is good at things. The king should not make a decision early, if there is one day in the future, my sister will definitely be able to achieve it. In addition, the credit of the sister is not as a craftsman, and I ask the king to take care of it. ”

Qin Zheng thought about how such a merit could deserve this request, and he smiled at the somewhat nervous Changji: "In this way, let your sister be the master of the Shaofu Mansion, not under the jurisdiction of others, and directly obey me." How is it? ”

"Then thank you to the king, Sister is still young, and she still has to be in the house most of the time, please understand this."

"I don't know the name of this thing, or your sister's name." Qin Zheng didn't care that someone was named in Shaofu, Shaofu was his private treasury, and there were many craftsmen who made various objects for the royal family, and they were planning to build a mausoleum. One more person and one less person is completely something that he can decide alone, and there will be no obstacles at all.

Under the encouraging gaze of Lu Pheasant, Chang Ji finally bravely said its name: "Waterwheel, just look at what force you use to push the windmill to name it." I, my name is Changji. ”

She has no respect for learning from Lu Pheasant, but what is this, Qin Zheng values her talent. There were many people who were respectful and courteous before him, but none of them could make such a miraculous instrument. If he had to make a comparison, he would rather have a talented person who was not very respectful than a person who was only good for nothing.

Lu Pheasant took Chang Ji back home and reported the good news to his mother Lezi, who couldn't believe that her eldest daughter had become a female official first. Although she had known Lu Pheasant's dream for a long time, she never thought that her eldest daughter, who had always liked to tinker with wood, could also become an official. Lu Pheasant had to explain the official position of an engineer to Lezi, and analyzed Changji's strengths to her.

Lezi was relieved to hear that her daughter didn't need to be like a full-time official, living in the workshop every day, and only needed to have an idea to go to Shaofu before she became an adult.

The extraordinary execution of the Qin State made the waterwheel fill the shore of Weishui in less than half a month. Every few miles on both sides of the Weishui River, a large waterwheel stands by the river, and people can hear the crunch of wooden wheels as they walk by.

Some Xianyang residents heard from the sick and disabled old men who managed the mill that they could hull the grain for them by collecting just a little grain. Interested people bring their own grain to the waterwheel mill, and in a matter of moments, the milled grain is brought out. Seeing that it was indeed so convenient, people brought grain from their homes, and soon many people with bags of grain gathered around the waterwheel.

Compared with the civilian waterwheels, the waterwheels used to polish weapons in the Shaofu workshop did not need to grind a stone mill as large as grain, but only needed a thinner stone grinding plate fixed on a wooden shaft. The hydraulic force drives the large wheel to the small wheel, and the stone mill driven by the small wheel rotates rapidly.

Metal arrows, spears, swords, etc., which would otherwise need to be sharpened by hand, can be completed quickly. The wooden or metal hilt of these weapons is engraved with the Xiangbang Changping Jun at this time, the engineer is a master, a righteous man, and a craftsman. The finished weapons were neatly put away and sent to the Xianyang arsenal later.

The craftsmen were full of praise for the invention of the waterwheel, which saved them a lot of time, and they did not know that the inventor was just a little girl.