"Go and call Guan Hai. ”

At the end of the text class in the morning, after lunch, Zhao Yu focused on instructing the hairy children on the mystery of the pile, and pointed out in detail the truth of refining strength to the bones for Cao Ang and other two disciples who had considerable external strength, so he asked Guan Hai to call and threw these disciples to Guan Hai.

With Guan Hai's current martial arts realm, it is more than enough to guide Cao Ang and them. During the period of Zhao Yu's absence, the disciples' martial arts cultivation and teaching were originally Guan Hai's agent.

At this stage, Zhao Yu's ten disciples have not yet reached the realm where Zhao Yu must be taught by hand.

When he came back yesterday, Gao Shun also threw it to Guan Hai, and probably today he will join his disciples to accept Guan Hai's teachings.

Although Gao Shun is also a fierce general, he is a wild man. All the skills are learned in the war, and they are not systematic. Since he has become a member of the other courtyard, he will naturally not be missing a point.

After sending the disciples out, Zhao Yu turned around and went in, immersed himself in the mystery of making cars and ships.

For Zhao Yu, it is not difficult to create a car and ship powered by Heaven and Earth Yuan Qi. With his current realm, he can completely use the means of refining weapons to practice magic weapons. Even let it take off, and it can travel thousands of miles a day. But that's not what Zhao Yu wants.

What he wants is a car and ship that can be applied to mortals and humane.

It is a thing that can be popularized.

Without him Zhao Yu, the cars and boats that others can build can also be built, that's what Zhao Yu wants.

Magic weapons, magic weapons, too high. That's the Immortal Dao thing. Without roots, you can't refine mana, you can't become a monk, and no matter how powerful the magic weapons and magic weapons are, it will be in vain if they are placed in front of them.

And with the scarcity of the root nature of all living beings in the universe, on the entire earth, starting from the existence of human civilization, counting Zhao Yu himself, I don't know how many roots there are.

To put it bluntly, magic weapons and magic weapons have no applicability in humanity and cannot be popularized.

What Zhao Yu has to do is to reduce the magic of the Immortal Dao layer by layer until it can be applied to mortals. And the difficulty of this is probably more difficult than refining magic weapons.

Fortunately, I went back to modern time and space, and got a lot of inspiration from the cars and planes of modern time and space.

Otherwise, Zhao Yu is not sure how much time it will take to figure it out.

Although Zhao Yu is no longer a mortal, he is not an immortal yet. In a single thought, there is no ten thousand turns, and everything cannot be thought of. After all, there are still omissions.

To refine the vehicles and ships suitable for mortals, Zhao Yu used the machine car that was made at the beginning as the prototype, and planned to carry out certain transformations on the basis of it. As long as the system applicable to mortals is thoroughly understood, then the truth contained in this machine car can be completely applied to cars, ships, and even flying machines.

Zhao Yu crossed his knees in the air, and his spiritual sense spilled out, like a big net, wrapping the machine car. Everything inside and outside the machine car, in his soul, was presented one by one, revealing the slightest.

"When I first made this machine car, it was powered by the Five Elements Yuan Fu, which could not be popularized, and could only be used as a doll in other courtyards. Now if you want it to be popularized and mortals can make it, you must remove the link of making the Five Elements Yuan Talisman. Because mortals can't make the Five Elements Talisman. ”

Zhao Yu's thoughts turned: "The cars and airplanes of modern time and space also use the mystery of the talisman, which is a circuit mode that combines foreign technology, and uses this method to transmit Yuan Qi and achieve... Well, the purpose of doing the work, thereby propelling the movement of cars and airplanes. ”

"But at its core, it's still a pseudo-rune. ”

"But it's a battery talisman. ”

Zhao Yu has a deep understanding of this. In modern time and space, when he was riding in a car or an airplane, his spiritual sense spread out and he saw through the mysteries. It is said that it is the use of talismans, but it is only the skin, and the core is still electricity. It is a battery made of a battery, on which some fur patterns of the talisman are engraved. The electricity in the battery is used as the starting energy to stimulate the Daowen, so that the Daowen can absorb the Heaven and Earth Yuanqi, thereby promoting the movement of the machine.

This model is actually very good. The battery doesn't need much capacity, because it only needs to play a role in stimulating the channel. The movement of cars and airplanes, the real power, comes from the Heaven and Earth Yuan Qi that the Fu Dao Pattern absorbs after being activated by electricity.

However, this model, although it gave Zhao Yu a lot of inspiration, the core thing, that is, the battery, is still a little troublesome.

In fact, it is not difficult to manufacture batteries, but in order to actually use them in vehicles and ships, it is also necessary to rely on the strong industrial base of modern time and space. And now, at the end of the Han Dynasty, this ancient time and space, there was no such a strong industrial base.

Zhao Yu pondered for a long time, but he didn't think of a substitute.

"Do you really have to start with the battery?"

"Build a battery farm?"

Zhao Yu scratched his head.

"It's not difficult to engrave the talisman pattern on the machine. Ordinary people can do it. Activating the pattern is the key. ”

Zhao Yu thought about it, flicked his sleeves and took a piece of iron from the distant house, moved his fingers like a hook, and carved some lines on the iron sheet. These patterns are the patterns that make up the talismans. To make the most basic talisman, it takes dozens or hundreds of combinations of Dao patterns, and there can be no slightest difference, which is very difficult. But with just a few lines, it's not that difficult.

The lines were carved on the iron sheet, and Zhao Yu took another piece of dry wood and set it on fire.

Placing the wood under the iron sheet, Zhao Yu took a closer look.

Electricity can activate the pattern, but can heat or something else?

Looking at the history of humanitarian development before Zhao Yu's appearance, the process of foreign science and technology, from simple manpower, to mechanical energy, thermal energy, to electrical energy, step by step development, is in the same line. Since electricity activates Dao Pattern, what about the rest?

Is it possible to use fire to generate heat energy to activate the Dao pattern?

However, Zhao Yu was disappointed.

The wood burned out, and although the iron pieces were red, the lines on it did not move at all.

"It is not for nothing that modern time and space use electricity to activate Dao patterns. Maybe only electricity can do it?"

After thinking about it, Zhao Yu flicked his fingers, and a wisp of sparks ignited in his fingertips, but this time it activated the Dao pattern on the iron sheet.

"It seems that mortal fire cannot. The flame that I have urged with my mana, but it can. ”

"But this is not good, this is no different from using the Five Elements Yuan Fu as the power core. ”

...

At a time when Zhao Yu was entangled in reducing the immortal Dao methods layer by layer and being able to popularize them to the majority of mortals, on Cao Mengde's side, the war had completely ended.

The end of the Battle of Guangling actually marked Cao Mengde's victory. After solving the allied forces such as Lu Bu, Cao Mengde personally led the army to the west, and Sun Ce and Zhou Yu came up with ideas from time to time, no matter how slippery Ji Ling was, he was powerless to return to the sky.

was blocked by Cao Mengde by the river and annihilated.