I guarded the Wuhun Hall in Douluo for 30 years

The square crystals on the ground are filled with strange lights and brilliant colors, and the majestic soul power is contained within them.

What's even more amazing is that when the third elder picked up two square crystals and collided with them, they shattered into smaller crystals of the same size.

When ten small crystals are put together, their length and width are exactly the same as those of a large crystal.

This is a phenomenon that never occurs in nature.

"This is a divine thing!"

The third elder held a handful of small crystals in his hand and burst into tears.

Gu Yuena also came down from the stands at this time, leaned over to pick up a Soul Power Cube Crystal, put it in the palm of her hand and played with it.

"I never thought that the soul power of the gods would become like this when it fell to the human world... It is truly an extremely beautiful gem."

In that small piece of crystal, stars were flowing, as if the entire starry sky and even the entire universe were held in one's hands.

Hearing this, the third elder widened his eyes and said in shock:

"This is actually the soul power of the God Realm!"

After murmuring twice, a smile appeared on his face, "I didn't expect that an old man like me, stuck at level 96 my whole life, would be able to see a treasure from the God Realm."

The fourth elder came over, holding an armful of crystal stones with a smile, and said happily:

"Now, it can be regarded as an energy source for the soul guide. With so many soul power crystals, we can definitely create something big!"

From a practical perspective, the experiment was about finding a source of energy.

Although several people didn't know what Zhang San wanted this kind of crystal stone for, when he said it could be used to make soul guidance devices, everyone understood.

In a fantasy world, climbing the technology tree from scratch and developing steam engines, electrical machines, etc. are all false ideas.

farming.

In other words, the essence of national development is to increase productivity.

It is really a waste of resources to leave a nearly infinite energy source like soul power unused and slowly climb the old technology tree.

News of the success of the experiment soon reached Bibi Dong, who was dealing with official duties.

After reading the entire experimental report and subsequent conjectures, I felt a little excited:

"Now that the energy problem has been solved, when will we start building giant steel birds that can fly and tireless carriages that can travel thousands of miles a day?"

“Can that kind of thing really be made with the power of mortals?

"It's incredible that something weighing dozens of tons can fly in the sky..."

The giant birds and carriages Bibi Dong mentioned are airplanes and trains.

This is also the idea put forward by Zhang San.

Although he also wants to open a portal, the Douluo World cannot bear this thing. If it is opened once, the entire world will collapse and shrink inward until it is destroyed.

It is better to use high energy to make such low-tech creations, but these Douluo people don't know the technological content of this thing.

In a fantasy world where the law of gravity has not been summarized, what kind of bicycle is needed, as long as it can run.

When Golden Crocodile got the news, he was unusually drunk.

When his strength reaches this point, there is nothing left to cherish except the pursuit of the illusory god.

But the "level up in five years" promised by Zhang San gave him hope of becoming a god.

Not to mention the secrets of the world he revealed later.

This continent is a huge sphere that rotates on its own every day and also revolves around the sun...

It was just a few words, but he was addicted to it, trying hard to unravel the mysteries of this world.

Now that my idea has been confirmed, the sense of reward and excitement is indescribable.

In addition, Wuhun Palace won the Slaughter City, which made him even more happy. It made him even more drunk.

the next day.

After Zhang San returned to Wuhun City, he first accompanied Bibi Dong to review and approve the latest documents, and then took Bibi Dong to the Wuhun Research Institute.

Gu Yuena and the other research elders were waiting happily, and when they saw the two people coming in, they all applauded.

"The soul power on the mainland was leaked from the God Realm... Even I am the first to hear about this."

Gu Yuena said with a tone of approval. It was obvious that she was also very interested in this kind of "knowledge".

Since the God Realm can leak soul power, why is it that the concentration of soul power on the mainland cannot reach that of the God Realm?

She desperately wanted to know why all this was happening, but she also knew she couldn't rush the matter.

The second elder said excitedly:

"Your Majesty, Your Majesty! We have mastered the method of producing large-scale energy. When should the iron monster be produced?"

Zhang San laughed twice, poured a basin of cold water on him and said:

"The manufacture of trains requires a lot of iron ore reserves. The iron ore reserves in Wuhun City cannot even build a locomotive."

The third elder suddenly clapped his hands and suddenly realized, "We don't have it in Wuhun City, but we have it in Gengxin City!"

As soon as these words came out, everyone present became thoughtful.

In Gengxin City, the city of metals, various metals are sold. In addition to ordinary metals, there are also various rare metals.

This locomotive is not entirely made of ordinary steel. Because its energy source is soul power crystal stone, some special metal powder must be needed to draw the soul power array.

Otherwise, this cubic crystal is like a battery and cannot be used at all.

"Gengxin City is within the Star Luo Empire, but it is still inland."

Bibi Dong nodded and said, "Moreover, the Continental Blacksmiths Association is located in Gengxin City, and you can go there to recruit some senior blacksmiths."

Her words set the schedule for the next three or four months.

Some time ago, she had already been to the Tiandou Empire, and it was only a matter of time before she went to the Star Luo Empire again.

However, building a locomotive is a trivial matter.

Building a railway is a big deal!

The metal ratio, specification, size, spacing, etc. of railway tracks all require step-by-step experiments.

There are also gravel, sleepers used in track construction, terrain exploration, etc.

Even machine tools, the cornerstone of industry, are still in the research and development stage.

For example, metal cutting machine tools, forging machine tools, woodworking machine tools, etc. These cannot be manufactured by Zhang San just by giving him the drawings.

If the hardness of the grinding wheel materials, boring tools, planers, etc. is low, there is no way to reprocess the parts.

Therefore, we must go to Gengxin City. The rare metal materials there are likely to be one of the manufacturing materials for machine tools.

But Zhang San still gave them the drawings, and slowly tried all the materials through exhaustive methods, and he could always find something suitable.

After Bibi Dong set the schedule, he ordered everyone:

"I will have these research contents published in the Di newspaper. At the same time, in order to celebrate the victory of the Killing City, the entire Wuhun City will have a three-day holiday and hold a celebration!"

There are imperial newspapers in the Wuhun Palace. They are similar to the imperial newspapers from previous dynasties. They are generally only disseminated in the upper and lower Wuhun Palaces and are not open to the outside world.

Because Zhang San has been busy with supernatural matters, he has not created modern newspapers on the mainland.

The manufacture of this thing requires movable type printing and power machinery. The former can be done with type molds, but the latter is troublesome.

It is too slow to use manual labor, and there is no steam engine for machinery.

But fortunately, the Soul Power Crystal Stone has been made. After going to Gengxin City this time, you can start making it.