After Lao Cheng left, Li Chengqian went to the river accompanied by the 'bald king', Zhang Lao Er has been busy for a long time, but the cylinder car is still lying on the ground honestly, which makes him very strange.

"Second child, what do you want?" Walking behind Zhang Laoer, who was squatting by the river in a daze, Li Chengqian patted him and asked.

"This tube car is too big, and it is weak, and it really can't stand up." Zhang Lao Er said a little dejectedly.

The tube cart is what we often call a waterwheel, like a big windmill, but there are countless bamboo tubes tied to the side extension outside.

When the cylinder car is placed along the water flow, it will rotate under the drive of the water flow, and when the bamboo tube enters the water, it will be filled with water, and when the water comes out, the water inside will be lifted to a high place because of the rotation.

Therefore, the cylinder car is actually a simple mechanical water lifting device, as long as the coordination of the flow rate of the water and the speed of the cylinder car is considered, do not cause excessive friction of the central shaft of the cylinder car and the water in the bamboo tube can not be completely discharged because the speed is too fast, which is basically a successful work

But in the same way, this guy can't be too bulky, otherwise his weight will be too big, and it will be difficult for the water to push it.

The problem that Zhang Lao Er faced was that their cylinder car was too big, and the diameter of the light was about four zhang, and it was difficult to make it stand up when lying on the ground.

"Wouldn't it be possible to find a few long logs to fix them to the water wheel?" Li Chengqian, who has received education in modern engineering mechanics, said casually.

"No, Your Highness, even if you match the water wheel with a keel, you can't even have a higher place in the four places, no matter which direction you use the force, you just drag it horizontally, and you can't make it stand up." Zhang Lao Er shook his head.

"You dig a pit in that position, find a thicker piece of wood and insert it vertically, and then pass a rope through the top of the wood, and tie the end of the rope to the keel of the water wheel, and the direction of power will change." Li Chengqian pointed to a general position with his finger and introduced a simple lifting method with a gesture.

Zhang Lao Er was still a little confused at first, but after Li Chengqian took a few small wooden sticks and put them on the ground for the second time to make a big supreme demonstration, he immediately realized that as if he was possessed by Commander Tang, he slapped his thigh vigorously and shouted: High, really high.

After solving the problem of the water wheel, Li Chengqian no longer cares how they set up the water wheel, he is the prince, not a force worker, just come up with an idea, the specific implementation still depends on the ability of the workers, if it doesn't work, it's a big deal to change people.

It was almost noon, and it was almost time to meet with Changsun Chong and others, and if I didn't go back to the city, I was afraid that I would miss it.

And this time I heard that there is another prince of the family who wants to see him, and he didn't say who the little guy sent by Changsun Chong and others was, anyway, after being passed on by four, five, six or seven people, a piece of news reached Li Chengqian's ears and only the words 'son of the family' remained.

From the bottom of his heart, Li Chengqian did not want to see the so-called son of the family, the existence of Lao Li made the contradictions between him and the family destined to be irreconcilable, not to mention that in his concept, the family is also a target that must be divided and disintegrated.

These families that have been passed down for thousands of years may have had great ambitions from their ancestors, but now these ambitions have been slowly forgotten by the younger generations, and in their eyes there is only family interests and no country.

But because of the inheritance, they have the advantage of having children all over the world, and when the people are in turmoil, the embodiment of this advantage is not obvious. However, once the time comes in the era of peace and the need to develop the country, this force will become an obstacle to the development of the country.

In the dilapidated carriage, Li Chengqian's thoughts were chaotic, and Wu Chen, who returned to Chang'an the day before yesterday, described his trip to Qi County, which gave him a little more understanding of the family.

Seeing that the rules of the head of the family would be more complicated than meeting him, this is something Li Chengqian never thought of anyway.

Moreover, some officials of the state capital also need to wait outside the door to be summoned when they go to the Wang family, which makes Li Chengqian even more incomprehensible, is it true that these family heads are more important than the emperor's majesty?

Li Chengqian even thought maliciously that the old man had devoted half of his life to get rid of the family, perhaps mainly because these family owners were too awesome and made the old man taste it.

The bustle of the welcome building is as good as ever, the traffic in front of the gate is crowded, the flow of people is weaving, and the guys who solicit guests have long disappeared, not because they are lazy, but because they don't need to.

There will always be a variety of new dishes in the welcome building with the background of the inner palace, and there is no need to publicize it after a long time, naturally a large number of guests will come here, not to mention that there are a large number of officials who praise the royal stinky feet from time to time to praise something or something.

Park the carriage at the place where the carriage is stored, and as soon as you get off the carriage, the guards of the eldest grandson's family will come to guide the way. Because there were more people entering and leaving the city during the Dragon Boat Festival, Li Chengqian, as the crown prince, naturally couldn't compete with the people, so he came late to get his wish.

"Cousin, you're finally here, but it's so hard to wait for you as a brother!" Since he was beaten by the old man two days ago, this is the first time that Changsun Chong has seen the culprit who killed him.

"There is a traffic jam on the road, don't blame your brothers! No wonder! With a heroic fist, Li Chengqian glanced at the young man who had been standing silently on the side at a very fast speed.

"Brother Gao Mingxian is polite." A group of gentlemen returned the salute one after another, although Li Chengqian said politely, but it can't be listened to as true.

"Come on, Gao Ming, introduce you to a friend." After some greetings, the eldest grandson Chong pulled Li Chengqian to the young man who had not 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 Wu Chen say that he was one of the famous gentlemen in Taiyuan, and he almost ran rampant in Shanxi by virtue of the name of his grandfather the head of the Wang family.

However, the person was introduced by the eldest grandson Chong, and this face has to be given to some extent, and the cousins can't hurt the harmony for a gentleman.

Looking at the eldest grandson of the Wang family in front of him, Li Chengqian endured the greasy taste in his heart, and said politely: "I've seen Brother Wang." ”

I didn't expect these two goods to really accept Li Chengqian's salute with confidence, but they simply hugged their fists and said: "I've seen Gao Minggongzi." ”

In this way, the scene was suddenly embarrassing, and Changsun Chong was even more dumbfounded.

Although everyone goes to the welcome building to get together as friends, regardless of identity, only about the year. But Li Chengqian is also a prince, except for the little goblins of the Cheng family, there is still no shortage of respect that others should have.

Li Chengqian glanced at Changsun Chong with some surprise, made a look that you are waiting for me, and then turned to Wang Wenzhao and said, "It seems that Brother Wang is not good today?" Isn't it me, where did Li offend you? ”