After Lao Cheng left, Li Chengqian accompanied the "Bald King" to the river. Zhang Lao Er had been busy for a long time, but the car was still lying on the ground honestly, which made him very surprised.

"Dragon, what are you thinking?" Li Chengqian walked behind Zhang Lao Er who was squatting by the river in a daze and asked.

"This car is too big and it is weak and not under pressure, so I can't stand up." Zhang Laoer said a little depressedly.

The tube truck is what we often call a water truck, like a big windmill, but there are countless bamboo tubes tied to the edges outside.

When the barrel is placed along the water flow, it will rotate under the driving force of the water flow. When the bamboo barrel enters the water, it will be filled with water. When the water comes out, the water inside will be raised to a higher place due to its rotation.

Therefore, the cylinder truck is actually a simple mechanical water lifting device. As long as you consider the coordination between the water flow rate and the cylinder truck speed, don’t cause excessive friction in the cylinder truck’s shaft to be too fast and the water in the bamboo tube cannot be completely discharged. This is basically a successful work.

But similarly, this guy can't do it too heavy, otherwise it will be difficult for the water to push it if the weight is too high.

The problem Zhang Laoer faced was that their trolley was too big, with a diameter of about four meters alone. It was difficult to erect it while lying on the ground.

"Can you find a few long woods to fix them on the water wheel and then you can bear the force?" Li Chengqian, who has received modern engineering mechanics education, said casually.

"No, Your Highness, even if you put the water wheel on a keel, it won't work. There is not even a higher place around. No matter which direction you use force, you just drag it horizontally and you can't make it stand up." Zhang Lao Er shook his head.

"Dig a hole at that location, find a thicker piece of wood and insert it vertically, then use a rope to pass through the wood, and tie the rope head to the keel of the water wheel. Wouldn't the direction of power change?" Li Chengqian pointed at an approximate position and introduced a simple lifting method with gestures.

Zhang Laoer was a little confused at first, but after Li Chengqian took a few small wooden sticks for the second time and gave a demonstration of supremacy, he immediately realized that he was possessed by Commander Tang, and kept slapped his thighs and shouting: Gao, it's really Gao.

After solving the problem of the water truck, Li Chengqian no longer cared about how they set up the water truck. He was the prince, not a laborer, just give advice. The specific implementation depends on the workers' ability. If it doesn't work, at most, it's impossible to replace people.

It was almost noon, and it was almost time to meet with Changsun Chong and others. If you don’t go back to the city, you might miss it.

And this time I heard that there was another young master of aristocratic family who wanted to see him. The servant sent by Changsun Chong and others did not explain clearly. After four, five, six or seven people, a message came to Li Chengqian's ears, only the four words "young master of aristocratic family" remained.

From the heart, Li Chengqian did not want to see the so-called prince of a noble family. The existence of Lao Li made the conflict between him and the noble family destined to be irreconcilable, let alone in his philosophy, the noble family was also the goal of being divided and disintegrated.

These families that have been passed down for thousands of years may have had lofty ambitions, but now these ambitions have been slowly forgotten by their descendants. In their eyes, there is only family interests but no country.

But because of the inheritance, they have the advantage of their disciples and their children all over the world. In the war, the people are living in poverty. The manifestation of this advantage is not obvious. But once a peaceful era is in peace, when the country needs to be developed, this force will become an obstacle to national development.

In the shabby carriage, Li Chengqian's thoughts were chaotic. Wu Chen, who returned to Chang'an the day before yesterday, gave him more knowledge about the aristocratic family.

Seeing that the rules of the head of aristocratic family were more complicated than seeing him, this was something Li Chengqian never thought of.

Moreover, some officials from the state prefectures actually needed to wait outside the Wang family to be summoned, which made Li Chengqian even more incomprehensible. Could it be that these heads of the family are really more majestic than the emperor?

Li Chengqian even thought maliciously that the old man had devoted his life to destroy the aristocratic family, perhaps mainly because the heads of these aristocratic families were too awesome and made the old man taste good.

The bustling atmosphere of Yingbin Building is as usual, with traffic and crowds in front of the gate. The guest who recruited guests has long disappeared, not because of laziness, but because it is not necessary.

There are always various new dishes in the Welcoming House with an inner palace background. After a long time, there is no need to promote it. Naturally, a large number of guests come to visit, let alone a large number of officials who hold the royal stinky feet to come to support the show from time to time.

He parked the carriage to the place where the carriage was stored. As soon as he got off the carriage, the guards from Changsun's family came to guide the way. Because there were many people entering and leaving the city on the Dragon Boat Festival, Li Chengqian, as the prince, could not compete with the people, so he came too late as he wished.

"Cousin, you are finally here. I'm waiting for you so hard!" Since I was beaten by the old man two days ago, this is the first time Changsun Chong has seen the culprit who was beaten.

"Don't blame me for traffic jams on the road, brothers! Don't blame me!" He proudly replied and clasped his fists. Li Chengqian glanced at the young man who had been standing aside and silently at an extremely fast speed.

"You are polite, Brother Gao Ming." The playboys returned the gifts one after another. Although Li Chengqian said politely, he couldn't listen to it as real.

"Come on, Gao Ming, I'll introduce you to a friend." After some greetings, Changsun Chong pulled Li Chengqian to the young man who had never spoken: "This is Wang Wenzhao, the eldest grandson of the head of the Wang family in Qi County, Taiyuan."

Wang Wenzhao? This son, Li Chengqian, heard from Wu Chen that he was one of the most famous playboys in Taiyuan. Relying on the title of his grandfather, the head of the Wang family, was almost rampant in Shanxi.

However, the person was introduced by Changsun Chong, so he had to give him some face. The cousins ​​did not need to be harmed by a playboy.

Looking at the eldest grandson of the Wang family who was very tall in front of him, Li Chengqian suppressed the feeling in his heart and said politely: "I have met Brother Wang."

Unexpectedly, the two-man really accepted a gift from Li Chengqian with confidence, and just clasped his fists and said, "I have met Mr. Gao Ming."

This made the scene suddenly awkward, and Changsun Chong was even more stunned.

Although everyone went to Yingbin Building to get friends, regardless of identity, only age. Li Chengqian was the crown prince after all, and except for the little fairies of the Cheng family, there is no shortage of respect that others should have.

Li Chengqian glanced at Changsun with some surprise, gave me a look of waiting, then turned to Wang Wenzhao and said, "It seems that Brother Wang is the one who is here today? Could it be that I, Mr. Li, did not offend you?"

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Chapter completed!