Zhao Yun and Tai Shici rescued Lu Su and the family members he escorted, and the two accompanied them to Jianye.

Xu Chu really didn't leave in a hurry.

He also planned to wait for the two of them to leave, and take advantage of Lu Su's absence from Jianye to lead a thousand soldiers to rush to kill, and kill as many family members of Xuzhou officials as he could.

After all, Cao Cao's mission was not to bring these people back alive, but to kill them.

The calculation was not bad, but Xu Chu quickly discovered that Zhao Yun and Tai Shici had no intention of leaving.

They accompanied Lu Su on his way.

had a fight with Tai Shici, and Xu Chu knew that either of the two was not something he could easily win.

Knowing that there was no possibility of intercepting and killing Xuzhou's family members, Xu Chu had no choice but to turn around and leave with someone.

When Zhao Yun and Tai Shici drove Xu Chu away, they sent people back to Pengcheng to report to Lü Bu.

The two of them had already sent the families of Xuzhou to Jianye City, and the messenger who sent the letter to Lu Bu arrived in Pengcheng.

When he got the news, Lu Bu was busy at the wellhead to have the craftsmen install the newly built fans.

In the era when there was no electricity, fans could only work by shaking them.

A large fan was placed at the mouth of the well, and a craftsman held the crank with both hands and shook it vigorously.

As he shook the handlebar, the fan blades of the fan spun rapidly, and the strong wind blew towards the roadway leading to the shaft.

As the messenger spoke to Lu Bu, the people who were standing behind him took two steps back, so as not to hear what they shouldn't have heard.

It was only when he motioned for the messenger to stand down that the group dared to step forward.

Coming to the front of the fan, feeling the strong wind, a smile appeared on the corner of Lu Bu's mouth: "Such a fan can really bring fresh air to the mine." ”

The wind force of the wind turbine is indeed much greater than that of the windbags used earlier.

In addition to the wellhead, in the entire mine roadway, Lu Bu had people set up fans.

With the fan, the ventilation of the mine is indeed much stronger than before, but it also takes up more manpower.

Lu Bu was satisfied with the performance of the fan splitter, and of course everyone echoed it, losing no time in patting the sycophants.

"Chu Hou built a fan for the mine, and the craftsmen will never feel bored in the underground in the future." The mine steward patted Lu Bu's ass and said, "There is no one in the mine who is thinking about the benefits of Chu Hou. ”

"It's just that if you have a fan, you have to read my benefits?" "There are many problems that need to be solved in the mine, and the wind turbine is just the most urgent one," Lu said. ”

He said to the steward, "I'll find some blacksmiths to meet me later, and I'll have to build some usable brackets here." ”

Xuzhou's coal is underground, and when Lu Bu found coal on the surface, he happened to encounter it.

Coal like the kind that can be pulled out of the surface is most abundant in the north, especially in Shanxi, while in Xuzhou, in the east, coal mines need to be mined underground to bring high-quality coal to the surface.

Since it is working underground, the roof and the roadway walls on both sides must withstand strong pressure.

The brackets previously used in the mine were wooden piles.

Wooden piles are used to support the house, but it is difficult to meet the requirements when placed in the well to support the roof.

To support the downhole roof, it is better to use hydraulic supports.

Fortunately, Lu Bu has some understanding of the working principle of the hydraulic system, and also knows how to make the simplest hydraulic support tools.

He had to find a few blacksmiths in order to arrange for the blacksmiths to build the hydraulic support he had designed.

A few days ago, Lu Bu's mind was on the fan, and he didn't take much into account other things.

The idea of the hydraulic support was only put on the table after the fan was formed.

The people around him were born in this era, and only he has the cognition of two thousand years later, and also understands some technologically advanced crafts of this era.

There are many technologies that have been circling in Lu Bu's mind, and no matter which one of them is brought to this era, it will play a decisive and subversive role.

It's a pity that Lu Bu is just a person, and he is not a scientist who is proficient in scientific research.

All he could build was something less technological.

For example, he could only use the principle of gliding to build a glider, but he could not build a jet plane, not even a propeller-powered aircraft.

If only a jet could be built in this day and age......

Whenever he thought of this, Lu Bu hated himself a little.

Before this era, why didn't you learn more.

If I had learned more about mechanical structure at that time, I would have been able to build a simple generator, even if I couldn't build an airplane.

can bring electricity to this era, maybe he doesn't need to fight in the south and the north at all, and the heroes in the world should also bow down to Chen Chen.

Lu Bu knew very well that these were just his imagination.

In the past, he didn't learn these techniques and didn't know anything about how to generate electricity.

Therefore, when the coal mine was equipped with a fan, all he could build was a hand-cranked fan operated by manpower.

It depends on human shaking to work, and once there is no external force applied to the rocker, the fan will stop working immediately.

Accompanied by everyone, he stood at the wellhead for a while, looking at the fan at work, Lu Bu explained to the steward: "Remember, the fan must not be controlled by someone at any time. The mines are getting deeper and deeper, and if there were no fans to supply air to the mines, sooner or later there would be a large number of craftsmen suffocating underneath. If the things I told you to avoid happen again, none of you in charge will be able to escape. ”

Lu Bu's words were very heavy, and the steward was already in a cold sweat, so he hurriedly leaned over and responded: "Don't worry, Chuhou, we will never let the fan stop for a moment." ”

The attitude of the steward made Lu Bu see that he would never dare to slack off.

People are life-conscious, and although the steward of a coal mine can ignore the lives of others, he will never despise himself.

Implicating the lives of the craftsmen with these stewards, even if they want them to let it go, they will never let it go.

As long as the managers put their minds on the coal mines, even in the era of backward science and technology, there will be no very bad and vicious accidents.

After explaining a few words of the steward that must be paid attention to, Lu Bu beckoned Sun Ce to leave the wellhead.

Staying by Lu Bu's side until he was not too close to the wellhead, Sun Ce asked, "Marquis Chu, is the messenger from earlier ......?"

"Didn't you hear?" Lu Bu turned his head to look at him and asked rhetorically.

Sun Ce grinned a little awkwardly: "The messenger is reporting to the Marquis of Chu, and I am listening to it from the sidelines, so it is inevitable that something will be wrong." ”

"Cao Cao really filmed Xu Zhongkang to intercept our family." Lu Bu said: "If I hadn't arranged for Zilong and Ziyi to protect me secretly in advance, I'm afraid it would have caused a big disaster this time." ”

Hearing that Cao Cao really sent Xu Chu to intercept their family members, Sun Ce frowned: "Where is that Xu Chu?" I'm going to kill him! ”

(End of chapter)