Xiamaqiao Farm is the closest farm to the palace, and there is no one. Out of the Xihua Gate, the interval is not far from the Chaoyang Gate of the inner city out of the city, to the north is the Ming Filial Piety Mausoleum of Zhu Yuanzhang, to the east is the Xiamaqiao Farm close to the imperial city.

Because the Ming Emperor's Palace is in the southeast corner of the city, it is much closer to Zhu Zhanji's farm than to enter the city.

Zhu Zhanji, who was filling the naval structure in the farm little by little, heard that Zhu Di was coming, and immediately asked the four hundred sergeants to sweep the floor and sprinkle water to welcome the holy driver.

Everyone in the internal prison officials knew that Zhu Zhanji was favored, and they were also particularly jealous of Zhu Zhanji, the grandson. Without waiting for Zhu Zhanji to ask, they made it clear why Zhu Di came to Xiamaqiao.

Regarding Zhu Di's thoughts, Zhu Zhanji thinks that he still knows it relatively clearly. This incident did touch his nerves, even if this battle for the heir was deliberately arranged by him, but he must control this struggle in a relatively easy to control realm.

However, this time, some of the actions crossed the line.

poked out the matter of King Han with the situation of Dengwengu, forcing him to make a choice, which was a humiliation for Zhu Di, who was used to being domineering.

However, Zhu Zhanji is also quite sure that Zhu Di will never lose his temper with him before he catches the direct handle.

Because Zhu Di is proud, does he want to punish himself, and he will also come up with evidence to make him admit his mistakes convincingly.

As for why it is determined that it is oneself, it is actually very simple, because only oneself has this idea, is a vested interest, and only oneself has the ability.

Zhu Gaosui, the king of Zhao, has been obsessed with doing business for a while now, and has sent two batches of royal ministers to Beijing in a row. One placed a huge order for four seagoing vessels at the Xinjiangkou Shipyard, while the other went to various parts of Jiangsu and Zhejiang to purchase all kinds of goods that sold well in Korea and Dongying.

Zhu Zhanji has earned millions of taels of silver in the past few years, which has completely stimulated him, and he has already put his energy and interest into making money.

As for his father, the crown prince Zhu Gaochi, from childhood to adulthood, the label on his body is the Confucian set of benevolence and filial piety. Although he knew that Zhu Gaochu wanted to compete with him for the throne, he still treated Zhu Gaochu as a real brother.

Even if he doesn't want to do it in his heart, but his character has been fixed for decades, and it is impossible to change it.

Remove Zhu Gaochi and Zhu Gaosui, then there is only one Zhu Zhanji left who has a reason to do something to Zhu Gaoxu.

Moreover, now that Zhu Zhanji has Jinyiwei as a helper, assisted by Ji Gang, the king of conspiracy, it is easy to embarrass Zhu Gaoxu.

Therefore, Zhu Di came over this time not for the military parade. No matter how strong this young army is, it is impossible for an emperor to come to review it again after just one year.

He didn't want to punish Zhu Zhanji, if he really wanted to punish Zhu Zhanji, it would be enough to directly exercise family law in the palace, and he would never give Zhu Zhanji, a grandson, a shameless man like this.

Therefore, there is only one possibility for his appearance, and that is to warn Zhu Zhanji not to go too far.

After thinking about these links clearly, Zhu Zhanji did not have the slightest worry and waited for Zhu Di's arrival.

The palace was too close to the farm, and the eunuchs who had been notified in advance had arrived less than an hour, and as soon as the pots and stoves prepared for the army were built, Zhu Di's guard of honor arrived at the farm.

Since he came to inspect the young army, no matter whether Zhu Di and Zhu Zhanji cared or not, Zhu Di still personally came up with the question and tested the geography test ability of the young army, and then announced the reward with satisfaction.

It's winter. At this time, the farm was not much to look at, so Zhu Zhanji simply led Zhu Di to his warehouse and introduced his "scientific and technological invention" to him by the way.

As long as his use value is greater than Zhu Gaoxu, even if Zhu Di finds evidence, he will not punish himself for this.

Zhu Di has also been hesitating, although he guessed that Zhu Zhanji was playing ghost behind this incident. But if you punish your grandson for the sake of a son, but there is no substantive punishment, it will only make the relationship between the two worse.

Therefore, he has been thinking about what kind of way to warn this grandson.

From childhood to adulthood, Zhu Di liked this grandson more and more, emphasizing literature but not Confucianism, and emphasizing martial arts but not bullying others. He was methodical, resolute and resolute, and brave on the battlefield.

This is the real heir in his mind, not the eldest son of the foolish worm and the second son who is brave and unscrupulous.

"Grandpa Huang, please look at this artifact, don't look at this artifact as inconspicuous, but my grandson is sure that as long as this thing is successfully developed, from now on, my Ming Dynasty's land transportation capacity can be increased by at least fifty percent."

Zhu Di didn't care at first, but when he heard Zhu Zhanji say this, he became a little interested. Looking closely at this artifact, it is just a circle of steel balls stuck in the inner and outer steel channels, and the periphery of the steel balls is stuck with iron sheets.

In this way, the inner and outer steel channels are connected as one and can be rotated separately.

"What is this? What does it do? ”

The grandson of this thing is named Bearing, which means that the axis bears the meaning. Fixed inner ring, outer ring can rotate, fixed outer ring, inner ring can rotate. This thing can be made large and used to rotate the waterwheel, and it can be made small to rotate the wheel. Installing bearings, whether it is an ox cart or a horse-drawn cart, can carry more than 50% more load, and can also be more labor-saving, and wheel damage will also be reduced. ”

He beckoned, and Madi, who was waiting on the side, immediately brought a scooter with four bearings installed.

Zhu Zhanji put the scooter in front of the warehouse, on the smooth pavement paved with blue bricks, stood on it with one foot, and with the other foot, his people quickly jumped out.

Zhu Di and a group of internal prisoners, the Jinyi Wei officials were dumbfounded, this is much faster than people walking.

At this time, Ma Zhicai drove an ox cart over, and the ox cart was filled with bags of grain.

Zhu Zhanji jumped off the skateboard, which was still jumping forward. Maddy trotted after him and picked up the scooter again.

Stopping the ox cart more than ten meters away from Zhu Di, Zhu Zhanji said loudly: "Fang is the speed, but now it is load-bearing." The general ox cart can only carry eight to fifteen stone goods, and no matter how much, either the oxen can't pull it, or the car bearing can't stand it. However, an ox cart with bearings can easily carry nearly thirty stone of grain, and a cow can easily pull it. Even, one or two people can pull. ”

Zhu Di was shocked, walked to the side of the ox cart in person, and carefully looked at the rice on the ox cart, this bag was half a stone, and the ox cart contained a full sixty bags.

As an immediate emperor, no one knows better than Zhu Di how much impact such an increase in transportation volume has on the logistics supply in the army.

If this had already happened, this northern expedition would not have required the mobilization of 500,000 people at all, only half of the number of people would be enough.

With more than 200,000 people missing, how much food can be saved!

"This thing could be mass-produced?"

Zhu Zhanji shook his head and said: "Not yet, the grandson is working on the process improvement, and I hope it can be mass-produced in the future." Grandpa, please come with me......"

Back in the warehouse, Zhu Zhanji took Zhu Di to a simple and amazing lathe.

It is a bit of an exaggeration to say that it is a lathe, which is five polished square irons, and the two ends are fixed to a frame.

The three in the middle are in the shape of a pin, fixed with a clamp, and in the middle of the fixture, is a hollow through groove, which is fixed with two bearings.

Then, there are large and small gears, one by one, connected from the top to the bottom. These nearly twenty gears form an alternative shock of the industrial age.

In the middle of the bottom gear, a reverse iron rod is riveted, and at the top of the iron rod is a slightly smaller iron pillar horizontally.

Except for Zhu Zhanji and a few of them, no one else could understand what this thing was.

Zhu Zhanji said to Ma Di: "Put the pulley down and go up and pedal a few laps." ”

Maddy immediately sat down excitedly on a triangular cushion, his feet resting on the iron rods on the gears, and his legs kicked rapidly.

The big gear drives the pinion, and then the pinion drives the big gear, and the ratio of the gear is driven in strict accordance with the force energy.

Although this power is far inferior to the power of the motor, complex processing cannot be performed.

However, when the clamp rotated rapidly, driving a straight wooden rod in the middle to rotate rapidly, and then Ma Zhicai held a pendulum rod close to his chest, and slowly advanced a fixed blade along the front of the five iron bars, and the wooden stick was immediately cut out of the wooden flower.

When the wooden stick encountered the high temperature, it slowly began to emit green smoke, and also emitted a fragrant pine fragrance.

Ma Zhicai stared intently at the wooden stick, and slowly exerted force, and soon cut the wooden stick into a round wooden stick, which was more round than any craftsman had painstakingly polished.

That wasn't all, he slowly advanced another clamp across the other side of the clamp toward the rotating wooden stick, which had only a fixed drill bit on it.

This drill bit is not special steel, and special steel has not been developed at present, but an ordinary thin iron column, which was hand-polished into a spiral drill bit by Ma Zhicai.

This kind of drill bit can't drill iron, but ordinary pine wood is not.

As the drill bit progresses and the stick rotates, the drill bit easily drills a thin hole in the middle of the stick. When it was less than a meter deep, the length of the drill bit was already at the end, and Ma Di stopped pedaling out of breath, and Ma Zhi changed the head of the wooden stick again.

At this time, not only Zhu Di, but even other people saw the wonderful use of this machine. The previous process was repeated, and in the end, a hollow wooden stick about 1 meter and 3 meters long was successfully made.

Zhu Zhanji handed the wooden stick to Zhu Di and said with a smile: "Grandpa Huang, look, what does this look like?" ”

Zhu Di didn't answer, held the wooden stick in his hand, and looked at the small hole in the middle with his eyes. After a long while, he put down the wooden rod and asked, "The wooden rod is easy to cut, but the iron rod is difficult to drill!" ”

Zhu Zhanji smiled: "We can cut wooden sticks now, are we far from cutting iron rods?" Give my grandson a maximum of two years, and I can make Da Ming have an endless arsenal of muskets in the future. ”