Rolling bearings are generally used for rotating components, which can greatly reduce the friction of rotation.

Using rolling bearings on cow power overturning can naturally save a lot of effort. In this way, the hydraulic overturning that originally required four cows to pull is only two cows.

The invention of rolling bearings in his era dated back to the 17th century. The most important component of this rolling bearing was steel balls, while the outer ring of the bearing was relatively simple.

However, even so, Xiao Ming cannot allow craftsmen to make high-precision rolling bearings now. His method of making steel balls is only to use the lowest-end free fall motion.

This method is to allow the molten steel to fall freely. During the falling process, the molten steel will naturally form a spherical shape like water. Below the molten steel is cooling water, which falls into it and cools quickly to turn into steel balls.

The steel balls produced in this method are of different sizes and surfaces. The next step is to process the grinder, and try to grind the steel balls into balls of the same size.

Now Xiao Ming has used this kind of bearing on Niuli Roller in order to make Roller have an irreplaceable accessory, so that no one can copy it at will.

Because he was also planning to sell Niuli to the merchants who started mining.

In this era, water in mines is the most troublesome problem for miners. Hydraulic overturning can not only irrigate arable land, but also pump water out of the mines.

As Pang Yukun issued a government order to send skilled craftsmen to Qingzhou to study, the news of Niu Li's failure gradually spread.

The always savvy businessman will naturally not ignore this news. In fact, because of Xiao Ming's repeated figuring out things.

Nowadays, businessmen are very concerned about any turbulent movements in Qingzhou and hope to seize business opportunities before others.

Of course, Xiao Ming did not hide it, and directly asked the Equipment Department to place Niu Li in his field demonstration.

"Your Highness, this water truck is really good. The water you pumped on this day is comparable to the previous ten days."

The first person to learn the news was naturally the local wealthy family in Qingzhou. Wang Shijie and others found the location of the water truck in just one day.

Moreover, this kid was very cunning and had a servant with him, but Xiao Ming only took a look and realized that this man must be the top carpenter in the Wang family.

Because he could tell from the rough palm of this person and the look of surprise at Water Car.

"Wrong, at least twelve days." Xiao Ming said confidently. Although this kind of bull power still uses bull power, its ability is basically equivalent to a modern small electric water pump.

If the ox is constantly replaced and the continuous work is working, the amount of irrigation is very considerable.

Qin Mu has returned from Chang'an, and this time Wei Qing and Sun Dong have arrived, and all the self-proclaimed four people have arrived.

Since Qingzhou has poured into a large number of foreign merchants, the four of them have become more attentive to Xiao Ming. Now they are like following the worm all day long, and they go to Xiao Mingman if they have nothing to do.

"Twelve Days!" Qin Mu exclaimed, and looked at the overturned structure hard and secretly recorded it.

The same is true for Sun Dong and Wei Qing. The four auctions of the Chamber of Commerce were squeezed out by Xiao Ming.

Now they all save as much as they want, and it is different from soap, so this is obviously a failure.

Xiao Ming laughed secretly and did not expose it. He could not hide the incident. Now he could only say that if someone else could create it, he would have to admit it.

If he cannot create it, he will be profitable.

Using the Patent Office, he could control the fiefdom and no one dared to imitate it, but he could not control other parts of the Great Yu Kingdom.

The four of them looked at it for a while, chatted with Xiao Ming for a while, and went back.

"Your Highness, these four people are clearly learning secretly." Lu Luo said contemptuously.

Xiao Ming smiled faintly and said, "Hehe, just learn it secretly. It is not certain whether you can succeed."

After saying that, he turned around and looked at the fields on the banks of the Xiaoqing River. Lu Fei's winter recruitment had ended. Five thousand new recruits and three thousand remained in Qingzhou, and the others were assigned to other prefectures and counties.

Because he received one million taels of silver, Lu Fei was also very excited and did not stop recruiting troops in spring. He discussed with Lu Fei and prepared to recruit another 5,000 people and control the army in the fief to 13,000 people.

If Qingzhou has sufficient food in the coming year, we will consider continuing to recruit troops.

Among the newly recruited people, Xiao Ming asked Lu Fei to try his best to select some fishermen from the coast.

Navy construction is not a matter of overnight, it is just a problem to find direction in the sea.

The so-called basic sailing ships in this era are walking along the mainland so that they will not lose their direction. Xiao Ming selected this group of people to cultivate a generation of people who know how to sail.

Now his plan is being implemented step by step according to the plan, such as the Construction Corps. Now on his land, new recruits are pulling oxen to reclaim the land, and hundreds of oxen are busy pulling ploughs.

In other uncultivated places in Qingzhou, Lu Fei also took his soldiers to reclaim the land.

In order to allow the Construction Corps to quickly cultivate farms, Xiao Ming equipped the corps with the best ploughing tools this time. Not to mention the sufficient oxen, the first time this oxen power was delivered.

He just hopes that the granary of the fiefdom will be more abundant next year.

Luluo looked at Xiao Ming's gaze and said with a smile: "Your Highness, this is the first time I have seen such a soldier from the ground."

Xiao Ming tapped Green Ivy's head, "Follow me, what's more you've seen for the first time?"

After walking around the arable land, Xiao Ming checked the reclamation situation and then went to Qingzhou City with Luluo.

At this time, there was still snow on both sides of the official road leading to Qingzhou. The cold in winter has not faded, but spring is not far away, and it will be a season full of hope.

Just like his fiefdom, it is a place full of hope.

After two or three months of busyness, he has created many commodities that the Great Yu Kingdom does not have, and these commodities are also expanding their influence to bring him continuous profits.

But the future is unknown, and he dared not relax at all.

Born in the royal family, sometimes you can’t help but don’t move forward, and there is an abyss behind you.

After entering Qingzhou City, Xiao Ming smiled when he was traveling through the flowing foreign merchants. Now he has taken at least the first step. He will also attract more merchants to enter Qingzhou to buy land and build workshops.

Then the goods produced from Qingzhou were continuously transported to various parts of the Great Yu Kingdom to bring huge profits.

In order to achieve this goal, he still needs to come up with more products to attract merchants.

Perfume, soap, and liquor are just the lowest-end in Xiao Ming's eyes. Niuli's car has a little technological content. The countless technologies in the technology library are still waiting for him to become an actual product here.

However, Xiao Ming now realized a problem, that is, his fiefdom is seriously lacking in technical talents, and Pang Yukun asked the prefectures and counties to send craftsmen to study and set a very good precedent.
Chapter completed!