"Actually there is no need to dig so deep."

Tian Hao couldn't help but complain, one thousand feet is more than three thousand meters, even if the mountain height of more than one thousand meters is removed, it has reached the level of two thousand meters underground.

This is nothing in the previous life, but it was very deadly in this ancient times when human power was still the main focus.

In other words, the geology here in Huashan is a huge piece of granite, which is stable and solid. You don’t have to worry about stress or other problems. Otherwise, you can’t dig so deep and collapse early.

“It’s very necessary!”

Wu Buyi on the other side put down the black iron sword in his hand and firmly denied Tian Hao's words, and the others were also full of determination.

The construction of the dungeon is related to the future of the Huashan School and cannot be careless at all.

It’s better to be harder and tired now than to be in trouble in the future.

They have to dig out an absolutely safe place.

Moreover, since their Huashan Mountain is hard in geology, it is a whole big stone, and there is basically no risk of landslides, and there are few earthquakes in the Guanzhong area.

Such perfect geographical conditions, if you don’t dig a little deeper, it will be a violent destruction of heaven.

In addition, they wanted to try whether they could dig out underground magma and use ground fire as a condition for ice and fire jade to convert cold air.

Although the Ice and Fire treasure jade is magical, the coal consumed is a bit amazing, it is OK in a short period of time, but it will be an exaggerated expense over time.

In addition, coal transported from the outside world is also easily stuck. If you want to develop freely, you must find new energy and achieve self-sufficiency.

The underground magma is a good goal!

"Okay, it's up to you, but be more at ease when digging, don't collapse... Huh!"

After looking around, Tian Hao was still very confident in the geological structure of Mount Hua. It was basically a whole piece of granite, so be careful not to collapse. However, a discovery made him stop talking.

"This is……"

Tian Hao stared at a black stone on the stone wall. Compared with the ore in his previous life in his memory, it was extremely similar, and there were a lot of quartz ore around it.

"Metallic luster, crystalline patterns, and is accompanied by quartz ore. Is it black tungsten ore? From the color point of view, it should be tungsten ore, but the content of manganese should not be low."

After roughly confirming that it was the kind of ore I had seen in my previous life, even Tian Hao was very excited.

He hurriedly shouted, "Master, dig out all these black ores."

In his previous life, he traveled to a tungsten mineral land. There was an exhibition hall in the local area that stored a lot of tungsten ore of different shapes, so he had some impression.

There are even pictures of the smelting process of tungsten ore on the walls around the exhibition hall. After all, it is a local pillar industry, so it is necessary to do a good job of publicity.

"No need to dig, there are so many black stones. We dug out a lot, and there is one piece here."

Qian Bufen leaned over and picked up a black stone from the gravel and handed it over. They dug out a lot of such stones in the past month.

"In the future, the excavation will mainly focus on this kind of black stone, and we will find all the black stones you dug out before. This is a big treasure."

With an excited greeting, Tian Hao quickly ran up with the black tungsten ore the size of a fist, unable to wait to make the final confirmation, and then refine it.

I don’t know if the mysterious thing like tungsten steel and black iron can be integrated, and what changes will happen after the integration!

"This is a big baby, why didn't you see it?"

Looking at the black stones in the pile of gravels, everyone was confused.

Is that thing considered a baby?

"Weak magnetic properties are indeed tungsten iron ore."

After going back on the other side, Tian Hao took out a magnet left from the generator and put it on the tungsten iron ore to magnetize, and then took the magnet away. The ore indeed had a weak magnetic property, which is a characteristic of tungsten iron ore.

This discovery made him very excited.

With his continuous understanding of martial arts in this world, he knew that ordinary steel was not enough to carry the collision between strong people.

This is also the main reason why many strong men will give up weapons in the end. Ordinary weapons cannot bear the explosion of power at that level.

Even if he creates pattern steel, it will be useless.

Just like the excavator in your previous life, even if you weld a long sword made of titanium alloy to dig on the bucket, you will still be broken.

Not to mention that ordinary steel cannot form an amplification effect on the warrior's true qi. Only special substances like black iron can have an amplification effect and have an astonishing strength.

But the black iron comes from meteorite, and the thing itself is limited, and it will take a day to use it sooner or later.

Only weapons made from material elements of this world itself have the most potential and can be mass-produced.

Among ordinary substances, tungsten steel has the highest strength.

Now that the existence of tungsten ore is discovered, even if the reserves seem to be not very good, it is at least sufficient to use in advance.

To calm down, Tian Hao hurriedly wrote down the steps of refining tungsten ore seen in the exhibition hall in his previous life, especially those reaction formulas.

The improvement of the innate god attribute not only brought him the ability to remember everything he saw, but also made his past memories much clearer, including memories of his previous lives.

Not long after, the drawings for the tungsten ore refining steps were written, and there were some reaction equations and annotations on the side.

"If you want to extract tungsten, you have to use sodium carbonate. Sodium carbonate was made from sodium hydroxide and carbon dioxide in the past chemistry class, but that was a laboratory method and was not suitable for large-scale production.

By the way, industrial alkali production methods can produce large quantities of sodium carbonate, which use carbon dioxide, water, ammonia, and salt.

Carbon dioxide and salt are not a problem, ammonia is more troublesome, and it seems that nitrogen and hydrogen can only be used for this stage.

Hydrogen can be done by water and gas, but carbon monoxide and carbon dioxide must be removed, which is not a big problem.

For nitrogen, hydrogen can be used to burn it with oxygen in the air to react into liquid water, and the rest is nitrogen.

Although it is not pure, it can be used barely.

But those two things seem to have to be reacted in high temperature and high pressure environments. I don’t know if the reactor made of black iron works.

In addition, you must also pay attention to the removal of tungsten ore, and you also need to make a lot of chemical raw materials.

There is also iron and manganese in black tungsten ore, and it is just right for manganese steel to be made. Well, just make silicon manganese spring steel in one step…”

Tian Hao thought more and more until he had written several pieces of rice paper.

Although there are only a few substances required for tungsten ore smelting, there are chemical systems behind it, so it is not easy to get them all out.

"Master's wife!"

Suddenly a familiar fragrance came into his nose. Tian Hao recognized this fragrance as a powder commonly used by the beautiful teacher's wife.

When I turned my head, I found that it was the master's wife who had arrived, and there was a bowl of black soup and medicine on the table.

"Come on, Hao'er, I've taken the medicine!"

He handed over the decoction with a little heat, and Ning Zhong signaled to drink it quickly.

However, this scene made Tian Hao think of a famous scene in Water Margin.

Fortunately, I am not Wu Dalang. Although my beautiful master's wife is also a stunning person in the world, she is not Pan Jinlian either.

This bowl of medicine is not a poison, but a health soup medicine made with a hundred years of Ganoderma lucidum.

Great tonic!

—————
Chapter completed!