Killers are basic techniques that are listed in addition to formal spells and can also be used by apprentice mages. Usually, they are extremely difficult to learn. The spell models that need to be constructed are so simple that children can understand them even when they are a few years old. However, their corresponding effects are extremely limited and their functions are very single. Many tricks are not practical in combat or work, but can only be used as supplements of formal spells or "preschool education".

Gao Wen knew several interesting "tricks", such as the pre-trick "Dyeing" of the Transformation technique, which can dye the target's hair into a random color, but it has no lethality except dyeing, and it can only last for two hours; or the trick "mind training" used simply to temper the mental power will be summoned immediately in the caster's own field of vision after being cast. This phantom will immediately start reading the youthful sad literature written by the caster when he was a child, and keep chanting until the caster takes the initiative to stop the spell effect, which has an incredible effect on tempering the mind...

Well, the literature of youth and sadness is Gao Wen’s own understanding. In the cognition of local mages, this phantom mainly tells the caster’s failures and stupid mistakes in his life. Because the phantom can only be seen by the caster himself, this is probably a psychological suggestive technique, a technique between spells and techniques, used to temper spirit, reflect on one's own, and summarize experiences, which is quite effective, but most people are not willing to learn this.

For formal mages, they are unwilling to call those who only master tricks the same "spell casters" as themselves. Those who perform a few tricks on the street to deceive foolish civilians, and even rely on a few tricks to deceive the country knights are all crappy apprentices, and even apprentices will not regard mastering a few tricks as much as a matter of pride. But correspondingly, if you can't master a few tricks, it will definitely be embarrassing...

Rebecca is obviously a powerful player in the embarrassing world of mages.

The repulsive trick that almost caused her childhood to have psychological shadows is one of the rare and powerful tricks among all kinds of tricks.

It is one of the predecessors of the force field spell, and is a variant of the "mind transfer object" that is also a magic trick. It is also a training technique for practicing a series of spells, including gravity manipulation, floating technique, and energy-shaping hand. The function of the repulsive trick is to push items directly in front of the caster or around the surrounding area (which effect depends on the type of rune byte added when building the spell model). The weight of the push item depends on the magic strength of the caster. It is a rare trick that can produce a certain effect in battle - pushing the enemy away or causing the enemy to be unbalanced.

Gao Wen knew about this trick, but he didn't expect it at all.

His mind is full of expansion gas to do work, or high temperature and high pressure airflow - even if he occasionally flashes through the motor model, he cannot connect with the most basic "repulsive trick" in the world.

Seeing Rebecca expressing her thoughts with great enthusiasm, Gao Wen reflected on himself with a little self-deprecating attitude—

Don’t look too high at the broad ideas and experiences of the "Time Traveler". These ideas and experiences may be effective, but often it will become a constraint and stumbling block for the Time Traveler, just like this time: Originally, there was a repulsive trick in Gowen Cecil's memory, but why didn’t you think of it?

Because Gao Wen's mind is full of classic engine models on the earth...

Rebecca had never seen a steam engine, nor did she know what an internal combustion engine was. She didn't even understand why Gao Wen had to add a sealed cylinder to the machine, so her thinking was not limited by this aspect at all. She only needed Gao Wen to propose a big idea, and then add her own good brain and magic knowledge in this world, so she could come up with a more perfect solution.

Of course, one very important reason is that Rebecca is indeed talented. With her advanced ideas, if you don’t starve to death in this world, you may become a great man, at least you can print it in history books for two lessons, but it is undeniable: Why are people from other worlds stupid?

They just didn't think in that direction!

Hetty was also opened up by Rebecca's idea. She took a piece of paper and outlined runes and lines on it: "That's right... repulsive tricks are also very suitable for transforming into simple magic circles. In fact, many magical mechanisms, such as the automatically opened doors and the most common floor traps, are all driven by repulsive tricks - but no one has ever thought that this power can be transformed into a standardized machine that can continuously operate... Ancestor, your wisdom and thoughts are indeed unfathomable."

As she said, she handed over the sketch drawn on her hand.

Gao Wen was praised by Hetty and sweated in the back of his head: his self-reflection has not been completed yet...

He took Hedy's sketch and glanced at him and found that not only did he outline several simplest repulsive arrays, but he also marked the cheapest material combination method that could complete the corresponding spell effects under them.

It is really worthy of being a thrifty family. If Hedy is missing in the camp, I don’t know how much money I have to spend.

The three of them got together and began to discuss the extreme basic things in spells with great enthusiasm. Rebecca first pointed to the cylinder on Gao Wen’s original drawing: “If it is a repulsive trick, then the sealed metal cylinder can be removed directly, or at most a protective cover to prevent foreign objects from falling into it, so there is no need to be so tight.”

"We can carve the repulsive array at one end of this base to push this thing called the 'piston'," Hetty was also aroused by research interest, "but how can the piston that was pushed away come back?"

"Use inertia, the inertia of this iron wheel, is called a flywheel," Gao Wen pointed to the flywheel connected to the piston. "It is connected to the piston through the crankshaft. When the piston is away from the repulsive array, the flywheel rotates to reset the piston."

Amber stared at the side for a long time, but at first she didn't understand it, but as Gao Wen and the other two discussed, she finally saw a clue: After all, the basic principles of this machine are not complicated, and its main structure is just a bunch of basic wheels and connecting rods. As a thief, Amber often deals with various mechanism traps, and she is still not unfamiliar with those wheels and connecting rods. At this time, she saw everyone discussing the issue of piston resetting, she said quietly next to her: "Which is the process of the piston approaching the repulsive array again? At this time, the magic array is still pushing it outwards-but at this time the big wheel has to be turned for the last half circle before it can continue to exert force, so the machine is competing with itself, right?"

"Yes..." Heti frowned when he heard this, "When the piston is far away, it is naturally necessary to push the repulsive array, but when the piston is reset, the repulsive array will cancel out the useful power..."

"'useful power' is called 'work'," Gao Wen took this opportunity to instill the nouns he was familiar with in the other party, and at the same time he had thought that if the machine was "competing with himself" was solved - for four-stroke engines or other classic engines on the earth, the piston needs to be exhausted to relieve pressure from the cylinder during the process of resetting the piston, and for this machine, he needs to stop the repulsion array from running at the moment when the piston is reset. "Runar trigger, we can use rune trigger to control the repulsion array - when the piston is away from the base of the power mechanism, the rune trigger is turned on, and when the piston returns under the drive of the flywheel and approaches the base, the rune trigger is interrupted..."

Various magic symbols appeared in Hetty's mind: "But how to control it? The flywheel rotates very quickly and the piston moves quickly. The magical style with such a quick response instantly needs to switch the position of the rune trigger, which requires advanced runes..."

As a result, before she finished thinking about it, Rebecca said casually: "Tie the rune trigger to the piston. When the piston approaches the base, the base will be opened, and then the piston is pushed away, and it will be pushed away as soon as it approaches, and it will be pushed away as soon as it approaches...wow, it's jumping."

So what picture appeared in this girl's mind so that the words "bounce" appeared?

Hetty and Gao Wen stared at Rebecca. The former was surprised at the exquisiteness of this solution, while the latter was amazed at the silly Roe Deer who is really a science and engineering genius - how did she seamlessly switch between magic knowledge and mechanical knowledge, and instantly jump out of her current thinking and get results in new ideas? Doesn’t her mind need to be cooled? Or do these two parts of knowledge actually run synchronously in her mind? Which solution will be used?

Rebecca was stared and shrank her neck: "Am I wrong?"

"No, no, no, this is a very good way," Hetty waved his hand quickly, "and I thought of more: Why do we only carve a repulsive array? The piston needs to move back and forth, so we can also carve a repulsive array on the other end of the power mechanism, so that the piston can do two repulsive efforts in one reciprocating..."

Gao Wen also looked at the sketch on the table seriously, thinking about the position of the rune trigger in his mind, and suddenly had some thoughts: "In addition, fixing the rune trigger on the piston is not the best way, which means that it will only be connected for a moment in one operation. We can connect it to the shaft of the flywheel, and let the two rune arrays at both ends of the piston be controlled by this trigger, and use a 'pluck' device to switch the magic circuit in which the trigger is located. That is to say, when the flywheel rotates to the first half circle, the rune is inside the first magic array, and when the flywheel rotates to the other half circle, the rune is connected to another magic array. In this way, during the entire process of the piston being pushed away from the repulsive array, the first repulsive array is playing a role until the piston reaches the farthest point - at this time the first repulsive array is closed, the second is opened, and the piston is reversed. What do you think?"

Rebecca opened her mouth, looked at Hedy, then looked at Gao Wen, and suddenly became depressed with her mouth: "Sure enough, I am still the stupidest..."

"You are not stupid at all!" Gao Wen was immediately amused by this girl who was used to being inferior. "You have opened the ideas of the power repulsion array. Your aunt and I are just knocking on this basis."

Rebecca continued to flatter her mouth: "But the idea of ​​this machine was still what you said about ancestors."

"But without your inspiration, my machine would probably be a drawing forever," Gao Wen laughed, "Don't you think you are very powerful?"

"Really?"

Gao Wen and Hetty smiled and nodded: "It's really true."

"oh!"

"By the way, ancestor, have you named this device?" Hetty suddenly remembered something, "This kind of new thing...you have the right to give it a new name."

"Is the name..." Gao Wen thought, and a name came to his mind, "That's called the Magic Engine."

Hedy listened to this strange word, combined with strange grammar, and slowly smiled: "Ancestor, this is indeed a good name."

Rebecca also nodded repeatedly: "Yes, yes, although I don't understand what it means, I seem very handsome!"

Looking at the two "granddaughters" who were in excitement and joy, Gao Wen looked down at his sketch and a new idea popped up in his mind:

Can this structure be further improved?

Or... Since there is already a repulsive array and rune trigger to base it, can we just make a little more advanced and completely different machines?
Chapter completed!