When the world outside the three mountains turned green, the ears of wheat began to turn yellow on the land that had been reclaimed years ago outside the walls of the annex courtyard.

It's just that the ears of wheat are yellowing, and the thick stalks and fat and slender leaves of the wheat are still green.

After a few months, under the shroud of the Four Elephants and Five Elements Array, the Taihe Courtyard seemed to be isolated from the world and became completely different.

With the operation of the formation, the Five Elements Yuan Qi scattered between heaven and earth were included in the area covered by the formation. The abundant nourishment of the Five Elements Yuan Qi has gradually made this place a blessed land. The climate has been reversed, and the four seasons are like spring forever, the vegetation is nourished by Yuanqi, the growth becomes very rapid, and the ripening period of melons and fruits is greatly shortened, and it is out of season.

Within the walls of the Taihe Courtyard, the pears, peaches, plums, oranges, and dates in the five courtyards are lush and green, exuding a faint fruity fragrance. In just a few months, the five fruit groves looked like they had grown here, and there was not a single trace of transplanting.

This annex finally looks less shabby. Full of life.

Zhao Yu drove a huge machine out of the earth courtyard with great interest. The four girls who were holding bamboo poles in front of the courtyard to beat dates looked at it, screamed and fled in all directions.

"Jujube again, four little gluttonous cats!"

Koharu sticks out his little head from the corner: "Sir, what is this?!"

Zhao Yu laughed: "I've been busy for half a month, and I've been busy with the car." ”

Zhao Yu's machine car looks similar to the chariot of modern time and space after two thousand years. It is one zhang high, one and a half zhang long, and one zhang wide. It is a hybrid structure of steel and fir. And it's tracked.

Among the bamboo slips left by Cai Yong, there are several scrolls from the Mo family, which mention concepts such as machine cars and machine birds. Zhao Yu had a whim, and it took more than half a month to make such a fight by himself.

Zhao Yu's machine car is a combination of the concept of modern time and space after 2,000 years and the concept of Mohism, but the core thing belongs to the fairy road.

Because it doesn't burn gasoline or diesel, the speed of the machine can't be raised. In fact, the Mohist machine uses pure mechanical energy. To use an analogy, it's like a mechanical watch. Once it's made, it's winded-up and then you can walk a certain distance. But it's too big, it's not fast, and it's not far.

Zhao Yu thought about using the Heaven and Earth Yuan Qi as kinetic energy, and the power core of this machine car was actually the Five Dao Yuan Fu.

That's why it's so big.

But it's a pity that only Zhao Yu can control this machine car for the time being. Only with mana can the Five Elements Element Charm be activated, providing kinetic energy for the machine car.

Zhao Yu plans to try the performance of the machine first, and then see if it can be transformed, or transformed into a way that does not require the Five Elements Yuan Fu and does not require mana to make it move, so that its speed can meet the requirements and the running distance can reach a certain level.

"Pick-up car?!"

Four girls' heads stuck out from the corner of the wall one by one: "Weird." ”

Zhao Yu beckoned: "Come up, let's try the performance of the machine car." ”

Zhao Yu got up from the top cover, opened the top cover, and jumped down. Then, with a rhythmic crunch, the back of the machine car slowly opened, revealing the open space inside.

The four girls looked at it and cheered, and the little fish also stuffed jujubes into their mouths, chattering and jumping, and entered the machine car.

There is a row of simple iron frames on each side of the interior of the machine car, which is considered to be an act. The space is wide and high, and the eight-foot man doesn't feel cramped when he stands up. In front is the driver's seat, there is also a steering wheel, and Zhao Yu is sitting. The girls came in, touched here, looked there, and were very curious.

"Don't make a fuss, sit down. ”

Zhao Yu said: "I drove." ”

The four girls hurriedly sat down in an orderly manner, and looked at Zhao Yu in front of them with a few pairs of eyes. I felt a slight shock, and before I had time to react, my body couldn't stabilize and fell from the iron frame to the back of the carriage, and I suddenly screamed in fright.

Zhao Yu looked back, hurriedly disconnected the supply of Yuan Qi, and the car stopped, and the four girls, who were supposed to stabilize their bodies, suddenly rushed to the front again, and this time they really fell into a ball.

Zhao Yu laughed.

"Mr. Bad!"

The girls jumped up, pouting one by one, very unhappy.

Zhao Yu smiled and shook his head: "You guys, don't practice well, your strength is sparse, and you can't hold your balance, it's okay now." ”

As soon as the machine moves, under the influence of external forces, the body loses its balance, and if you can hold the strength, you can react instantly and balance the situation. But a few girls have a lot of fun, and no matter how good the exercises are, it's useless to practice them well.

In addition, Zhao Yu also discovered his mistake and ignored such things as seat belts. In addition, the speed was too fast just now, and the instantaneous inertia was too great.

"Sit down. ”

Zhao Yu pretended not to see the girls' pouting mouths, the machine car started again, under the subtle control of mana, the wisps of Yuan Qi flowed out of the five elements of the Yuan Fu, and the car slowly increased speed, which was much more stable now.

Zhao Yu thought that he should design something similar to the 'throttle'.

The huge machine car drove out of the courtyard, and the steel tracks crossed the gate of the other courtyard, crushed the threshold of the gate, and came to the bluestone avenue outside, grinding out traces on the stone slabs.

So the cheers of the girls echoed in the blessed land of the other courtyard. Later, even the guards of Guan Hai's other courtyard came up one by one to try it. Zhao Yu drove the car and traveled between the three mountain packs, testing various performances.

The birth of the machine car added a bit of fun to the courtyard.

After this first test, the performance of the machine car was shown one by one. The speed of 100 meters is between four and five seconds, and the acceleration is extremely fast, and if the supply of Yuan Qi is released, the maximum speed can be reached in one second. And because it is a crawler type, it is not afraid of ruggedness. All-terrain is not enough, because the sealing performance is not enough, and if it is in the water, it will leak.

The machine car has a large space, fast speed, full horsepower, and is not afraid of ruggedness, and it is used for transportation, and even for military use, which could not be more appropriate.

However, it is not easy to remove the traces of the immortal path in it, without using the yuan rune, without involving the way of the rune, and it is not easy to make it so that ordinary people can mass produce it. Unless it is completely manufactured in accordance with the technology of modern vehicles two thousand years later, burning oil and gas, only mechanical energy is far from being able to achieve the effect of Yuan Fu urging.

But according to the technology of the 2,000th generation, it is not just steel, not just structure, it involves a huge industrial system. It's annoying to think about it, Zhao Yu simply doesn't want to, just treat this machine car as out of print, just use it in other hospitals.

However, what should be transformed is still to be transformed, such as transforming it to activate the power element symbol without mana traction. Otherwise, only Zhao Yu can open it in the other courtyard, and it will be useless at all.

A few days later, the machine was finally transformed. Talismans are used in more places, but mana is no longer needed. The 'throttle' - the Yuan Qi valve was added, and the seat belt and the like were added. So even Cai Yan and Zhang Ling began to learn to drive a car.

When Cao Mengde came, when he saw this machine car, his eyes were about to fall out.

He found Zhao Yu and was eager: "The machine car is of great use, can it be mass-produced?"

With Cao Mengde's vision, of course, he can see the wonderful use of the machine car.

But Zhao Yu's answer extinguished his enthusiasm.

"The core of the machine car uses a talisman, and it cannot be mass-produced. If you get rid of the talisman, it's basically a waste. Don't think about it for now. When I research and research, if it can be mass-produced, I will not be stingy. ”

Cao Mengde had no choice but to sigh.

And then get down to business.

"The earth talisman given by Mr. has been buried according to the nodes on the drawing. This—" he pondered, "really useful?"

Zhao Yu smiled: "Half a month at most, immediate results." ”

"That's good. Cao Mengde breathed a sigh of relief. The two sat down in the courtyard, and Cao Mengde said, "Mr. really didn't guess wrong, Lu Bu went north." When he went to Chenliu, he saw that Zixiao had 3,000 elite soldiers guarding him, so he went to Luoyang. ”

Zhao Yu nodded: "It's not clear." Can't you guess?"

Then he said, "Then I don't believe that you came this time, just this little thing." ”

"Two more things. Cao Mengde said: "One has to ask Mr., how are those young people trained?"

When Zhao Yu heard this, he nodded and said, "It's almost qualified." ”

is talking about the hundred people sent by Cao Mengde during the Shangyuan Festival. A month ago, Zhao Yu was almost cultivated, and now this month is free-range, let them teach themselves. Otherwise, Zhao Yu wouldn't have time to get a machine car.

These 100 people have been living in the fire courtyard, eating, drinking, and studying in it, and ten people are crowded into one room. When Zhao Yu taught them knowledge before, it was in the open space of the courtyard.

Zhao Yu spent a month and slightly used the methods of the Immortal Dao, and successively let them learn the Three Character Classic, the Thousand Character Text, the Disciple Rules, as well as the basic arithmetic and basic Gewu compiled by Zhao Yu. The whole five books, if you don't use your spiritual sense to run the mana and urge the Daoyin to teach, it would be wishful thinking to let ordinary people who don't know a single word learn it.

In addition to this, he also taught the exercises of the Outer Divine Power Stage of the Thick Earth Gong for them to cultivate. Zhao Yu said: "You have read the three-character scripture, the thousand-character text, the disciple rules, as well as basic arithmetic and gewu. They'll all be. Although the handwriting is still unsightly, it is enough to teach Mengxue. In addition, I also taught the first part of the Thick Earth Technique. I mean, children should be well-rounded from an early age. Try to popularize the exercises. ”

Cao Mengde listened to it and looked happy: "Okay, Mr. is tired." ”

Then he muttered: "This popularization exercise, isn't it... The disadvantages are not small. ”

Zhao Yu nodded: "I understand what you mean, but it's all a trivial matter." ”

He said: "The Five Elements Fist Sutra, complete I only taught Dian Wei before. In this way, every six months, you can select some meritorious people from your command, regardless of martial arts, and send them to me for further study. What do you think?"

Cao Mengde nodded immediately, this is a good thing, can you not agree?

Zhao Yu said again: "During this time, Taihe Beiyuan has stabilized, do you see which school-age children there are, um... If you are under the age of fourteen, choose ten and send them to another courtyard, and I will see if there are any materials to be made. ”

"Good!"

Cao Mengde was pleasantly surprised, and said: "My eldest son Cao Ang, thirteen this year, is just right!"

Zhao Yu smiled: "There is no limit to men and women. ”

After saying this, Cao Mengde said: "Another matter, I plan to launch an attack on Yuzhou after the wheat harvest. ”