When he arrived at the designated location of Lu Bu, the civilians waved the shovel and took out a big hole in the flat ground.

It was already afternoon when Zang Ba arrived.

The passage is not taken out much deeper, and it will be dark.

Lu Bu's tent is not far from the newly opened wellhead.

Although the tunnel support was solved, the light source was not solved, and he tossed and turned and couldn't sleep.

The coal mine is no better than other places.

When an open flame goes down the well, once a gas gushes, the explosion will be light.

If it causes a dust explosion, not only will the entire mine be scrapped, but it will also have to pay countless lives to enter.

At the end of the Eastern Han Dynasty, although few nobles took human lives seriously, Lu Bu knew very well that a decrease in population would inevitably lead to local weakness.

To dominate the world, population is the real and most important resource.

Making a cold light source?

There was no such technology in the Eastern Han Dynasty.

Use Night Pearl?

Lu Bu never thought of this method.

Not to mention whether Ye Mingzhu can be found, even if it is found, how many will it have to be used in the entire mine?

All the coal excavated was sold, but I was afraid it would not be enough to buy the Night Pearl.

Just as he was thinking about what method to use, a small spot of light flew past his eyes.

firefly!

Lu Bu was delighted and shouted quickly: "Come here!"

Zang Ba, who was patrolling the guards, ran over quickly: "Wen Hou!"

"Please catch fireflies." Lu Bu said: "Put them in bamboo cages, which can be temporarily used to light downhole!"

Zang Ba was confused and didn't understand why Lu Bu had to use fireflies to illuminate it.

Lu Bu ordered again: "Send the order, no one should light an open fire when entering the mine."

Although he didn't understand the reason, Zang Ba still agreed.

That night, the guards caught a lot of fireflies nearby.

The light emitted by a bug is very weak, but many bugs are together, but they are enough to illuminate a large area nearby.

Lu Bu was not very happy.

In summer, fireflies can be found in the wild, but in autumn, insects are mostly dormant or dead.

Then there will be no cold light source for lighting.

To solve the light source, we have to find another way.

Fortunately, with fireflies, he could only delay for one or two months.

The mine is under construction, and the Xuzhou military camp is also under construction in full swing.

Countless people participated in it, and the military camp changed its appearance in one day, not far from completion.

Since the coal mine started construction, Lu Bu has been staring at it.

The coal seam he chose was particularly shallow.

Scatter the upper layer of floating soil, and the coal is below it.

As the passage extends, countless cars of coal are sent to the ground every day. Lu Bu asks people to select the gangue to remove the slag, add yellow mud and beat them into coal balls to transport them to Pengcheng.

Chen Gong didn't accompany him for too long, and after following him for two days, he returned to Pengcheng.

The people who moved to Pengcheng were sent to the construction of villages outside the city.

Seedlings were planted in the land that was once uncultivated.

The shops in the city are also open one by one.

When Lu Bu rebuilt Pengcheng, Zhang Shiping brought many merchants.

Chen Gong showed the use of coal in front of them, and all the merchants were amazed.

When Lu Bu asked someone to develop toothpaste, all merchants, including Zhang Shiping, were not optimistic.

Although the sales of nobles and the profits were also very generous, the audience was too small after all.

Coal is completely different.

It can replace firewood and charcoal, even burn longer than both.

The worst thing is that Chen Gong’s quote is actually lower than the price of firewood on the market.

The low price and long burning make merchants ready to move.

Soon the first batch of coal sent to Xia Pi was ordered.

The entrance of the mine extends down day by day, and Lu Bu is thinking about how to find a suitable light source to replace fireflies every day.

Seeing that a month had passed, he still couldn't find a way.

In the tent, there was a small bamboo cage on the table in front of Lu Bu.

In the bamboo cage, there was a tiny firefly flying around.

I have been staring at the fireflies for a long time, but I have no prompts for creating a cold light source.

"Report to Wen Hou, Mr. Chen has sent someone to deliver the letter." The guards outside the tent reported.

"Please come in." Lu Bu ordered.

The curtain was lifted, and the guard led a man in.

The person who came was wearing armor should be the soldiers drawn by Chen Gong from the army.

The messenger held a bamboo tube in both hands and presented it to Lu Bu: "Mr. Chen ordered me to send a letter to Wen Hou, saying that it was important, please wait huh Wen, please return to Pengcheng as soon as possible."

The guard took the bamboo tube and turned it to Lu Bu.

After passing the bamboo tube, Lu Bu pulled out a roll of silk with small characters from it.

After expanding the browsing, he ordered the messenger: "You go back and tell the office first, and I will leave early tomorrow morning."

The messenger withdrew, and Lu Bu told the guards again: "Invite General Zang."

Not too many times Zang Ba came.

He asked, "What are the instructions for Wen Hou?"

"You look at this first." Lu Bu handed him the letter.

Zang Ba took the letter and read it: "Cao Cao sent someone again?"

"This letter can be said to be mixed." Lu Bu said: "The coal we sent back is sold out, which is enough to prove that the army can be supported through the coal mines. However, the people sent by Cao Cao are urging us to send troops to attack Huainan."

Lu Bu stood up: "Liu Biao in Jingzhou has long been eyeing Huainan, so he didn't take action, but was just waiting and watching. If we attack Huainan, if we don't grasp the rhythm well, it will cause a catastrophe."

Looking at Lu Bu, Zang Ba said nothing.

"The fight was too fast and it caused Cao Cao to be afraid. He would send troops to Xuzhou sooner or later." Lu Bu said: "The fight was too slow. Once the Jingzhou army arrived, our army would fall into a tough battle. Cao Cao really gave us a big problem."

He then asked Zang Ba: "Have you found talents suitable for managing coal mines?"

"There are a few, but I haven't gotten started yet, so I'm afraid I can't take on the big responsibilities."

"We can't always be here." Lu Bu ordered: "Please call them, I will explain some things, and the coal mine will be handed over to them first, and you can accompany me to Pengcheng."

Zang Ba ordered the guards to call the people.

The few people he chose were kind and recognized by a few words.

For those in the late Han Dynasty, coal mines were a completely emerging business.

The greater the ability, the more obsessed with changing the status quo.

What Lu Bu needs now is the honest man who follows the steps.

Only honest people will be completely obedient and will implement what they have taught.

Several people who were about to take over here came, and Lu Bu analyzed his understanding of the coal mine one by one.

It was not until the few people fully understood that Lu Bu asked them to retreat.

There was nothing to say that night until dawn, Lu Bu led Zang Ba and a team of guards to Pengcheng.

They rode their horses and galloped, and in just over half an hour, they arrived outside Pengcheng City.

Chen Gong, who had already received the news, ordered the city gate to be opened just as dawn.

When Lu Bu and others came back, the city gate was already open to greet them.
Chapter completed!