At the beginning, his wife came to him, and he became rich by selling kidney treasures.

Hearing Ren Hao's concern, the two could no longer stop crying. They held each other's hands and cried.

"Ren Tiesan is a treacherous villain. He must be unwilling to accept the offense he caused a few months ago. If he behaves abnormally, you two ladies can deal with him as you wish, with a small punishment and a big warning..."

"To win over the people, you must use both kindness and force. You cannot be soft-hearted, nor can you force them to submit. He who wins the hearts of the people is superior, and he who wins their manpower is inferior..."

The long and eloquent article was full of earnest words, which moved Su Wan'er and Xu Yating deeply.

Although there were no corny words, everything was done for their own good, telling them how to deal with problems.

This kind of concern that focuses on practical matters is countless times better than sweet words.

After listening to the letter, Su Wan'er wiped away her tears and said, "How can I feel at ease when my husband has been away for several months?"

"Don't worry, sister. My husband is extremely intelligent, far superior to ordinary people. He will be fine." Xu Yating consoled her.

"What my husband wants most is for us to be safe and take care of the family for him."

Hearing Xu Yating's words, Su Wan'er's worried expression eased a little, and she sighed, "I hope my husband is well."

……

The God of War is a hundred miles outside the pass.

Ren Hao's team of 5,000 coal miners are still working hard and tirelessly.

After more than ten days, everyone was tired but happy.

The excavation work is really difficult. It is easier at the beginning, but the further you go down, the more large stones there are. They cannot be moved by manpower, so you can only break them up with hammers and chisels and then move them up one piece at a time.

The consumption of physical strength is undoubtedly huge.

The good thing is that although life is tiring, you don’t have to fight hard on the battlefield.

Even those soldiers who are fearless of death hope to work for a longer period of time. Not being afraid of death does not mean they are willing to die.

Survival is human nature, so everyone is in pain and happy at the same time.

Only one person is unhappy.

That's Ren Hao.

Half a month has passed since the excavation began, but the progress is still slow.

Without modern tools, digging deeper becomes more difficult.

They only dug less than one meter yesterday, and it took most of the day just to deal with a big rock. Such progress made Ren Hao frown.

Human power is sometimes limited!

Those big rocks blocking the road are really annoying. If we continue like this, I'm afraid it will take two months to dig to the appropriate depth.

In the industrialized era of the past, people could simply use a drill to find out whether there was coal, and it would take less than three days.

"If it doesn't work, let's just use explosives!" Ren Hao gritted his teeth and said fiercely.

This world also has gunpowder, but the gunpowder in this world is still used in fireworks and firecrackers and has no application in war at all.

Firstly, the three materials for gunpowder are difficult to find. Among saltpeter, sulfur and charcoal, saltpeter and charcoal are relatively easy to obtain, but sulfur is more difficult to obtain. Most of it is extracted from pyrite, and a small part is natural sulfur.

In the cold weapon wars of this world, no one has ever thought of using gunpowder as a weapon.

It’s like in the Spring and Autumn Period, when people were going to fight, they had to make agreements beforehand that they couldn’t stab each other in the back or launch surprise attacks. But since a man named Sun Wu showed up, fighting became a battle of wits and courage.

Therefore, Ren Hao expressed his understanding that gunpowder has not developed much in this world.

But he also knew that once gunpowder appeared in an explosive, highly damaging form, it would be thrown into battle in a very short time.

It will indirectly lead to more deaths.

Moreover, it is not enough to keep it secret. The enemy has countless ways to obtain the formula of gunpowder and even formed explosives. Once it is discovered, not only ancient China, but the whole world will enter the stage of war.

Perhaps hundreds of years later, guns will appear, and hot weapons will replace cold weapons and become the executioners that kill countless people.

After much thought, Ren Hao decided to make gunpowder to solve the current problem first.

Hot weapons do not mean more deaths, and cold weapons do not mean fewer deaths.

In the previous life, after the eight wild boars entered the pass, there were ten massacres in Yangzhou and three massacres in Jiading. The number of Han people slaughtered was even more than that killed by the later Japanese invasion.

Maybe there will be a need for gunpowder in the future, so let's just treat it as an experiment now.

After making the decision, Ren Hao immediately sent people back to the War God Pass to ask Xu Qing to prepare a large amount of saltpeter and sulfur for him. As for charcoal, Ren Hao directly ordered the craftsmen accompanying the army to make it themselves.

After all, the fewer people who know about this, the better.

Three days later, the people sent by Xu Qing brought back two carts of saltpeter and sulfur, and Ren Hao then began to configure and test them.

Unfortunately, he was a poor student in his previous life and didn’t know the ratio of gunpowder, so he could only keep experimenting.

Finally, one day later, Ren Hao came up with a mixture of one nitre, two sulfur and three charcoals. After it was ignited, a violent explosion occurred.

With the addition of gunpowder, it became easier to chisel stone.

There was a long fuse, which exploded after being ignited. When everyone went down again, the big rock had been blown into pieces.

Everyone was smiling happily. The big stone that would have taken half a day or even a day or two to chisel open was now done in just one go.

With the advent of explosives, excavation efficiency increased dramatically.

Five days later, his captain reported that they had dug twenty feet!

Ren Hao personally went to the bottom and led people to dig out some of the soil underground. After bringing it to the top, Ren Hao checked it carefully and felt a chill in his heart.

There is obviously no coal in the soil here. The soil is moist and filled with a rotten smell.

A month's time was wasted just like that.

Ren Hao was not discouraged. The chance of success in one go was really slim, especially for someone like him who knew a lot but also didn't know much. Only by continuous trying could he reap the fruits of victory.

Since one place didn't work, Ren Hao immediately led his army to continue moving westward.

We are preparing to select a lower location without underground rivers for excavation.

Not long after setting up camp, a familiar voice suddenly sounded from a distance: "Brother Ren! Brother Ren!"

Xu Hu rode up on horseback, and at Ren Hao's signal, he let Xu Hu in.

Coming closer, Xu Hu didn't bother to say anything more. He took out two black objects from his arms and placed them in front of Ren Hao.

His eyes fell on Xu Hu's hand, and Ren Hao's eyes suddenly lit up!

coal!

Taking a deep breath, Ren Hao suppressed the ecstasy in his heart and took the coal from Xu Hu.

The irregular black coal blocks flash a shiny luster in the sun, which is dazzling!

After searching everywhere for something, it still took a lot of effort to get it!

Ren Hao also didn't expect that the first place dug by the 1,500 people led by Xu Hu would be the first to produce coal!

One piece of coal means there are countless pieces of coal!

Even if there are only 500,000 tons of coal, it will be enough for Ren Hao to make a fortune!