The next day, a slow knock on the door woke Qin Yan up. When he opened the door, he saw Lin Miaomiao's figure.

"Qin Yan, Master Jianyi is going to give us a professional lesson." Lin Miaomiao glanced at Qin Yan and turned to leave.

Qin Yan scratched his head, very strange. Looking at Lin Miaomiao's appearance, she seemed to be very unhappy with herself. Yesterday was fine, how did you provoke him today?

After breakfast, Qin Yan came to the sword casting room early. I have to say that after enrolling in school for such a long time, the number of times Jian Yi has taken professional classes is only a handful.

At half past eight in the morning, Kenichi pushed open the door on time and entered the sword-casting room. He smiled and walked over to his dedicated lectern and sat cross-legged on it.

"In the past few months, the demons have frantically launched wormhole attacks as if they had taken medicine. I couldn't sit idle for a moment, and I didn't give you a lecture. However, now that the demons have died down, I am ready to teach you how to forge swords. ”

Speaking of this, Kenyi took out a boulder the size of a grinding disc from the space watch.

"Who's going to tell me, what kind of stone is this?"

"Titanium ore!" Lin Miaomiao hurriedly replied.

Jian nodded and said with a smile: "That's right, this is the most common sword casting material, titanium ore." Today, I'm going to show you how to build a lightsaber. Let me start by asking a question, what is the biggest difference between the Force and the Void Force? ”

"Attributes!" Lin Miaomiao, like a classmate, rushed to answer again.

Jian Yi smiled slightly and said, "Yes." Mastering the Void Force will allow you to form the attributes of the Force. These properties come in a variety of ways and serve different purposes. For swordsmiths, the best attribute is temperature. ”

"Temperature, also a property? The so-called attributes, isn't it something like a fire attribute or an ice attribute? Qin Yan blinked, his face full of curiosity. There is not much knowledge about the Void Force in the textbooks, and he knows very little.

Lin Miaomiao glanced at Qin Yan and said angrily:

"Who told you that wind, thunder, ice and fire are attributes? You think the Void Force is the magic of the novel? Is this a scientific society? Wind is the manifestation of the speed attribute, thunder is the manifestation of the magnetic field attribute, ice and fire are the manifestation of the temperature attribute, and of course there are many more attributes, which I don't fully understand. ”

Qin Yan suddenly realized, and couldn't help but give Lin Miaomiao a thumbs up. Suddenly, Lin Miaomiao looked smug and glanced at Qiqi.

Kiki's face was full of inexplicability. Why is this Lin Miaomiao hostile to me?

At this time, Jian Yi explained again:

"Temperature can affect the activity of the molecules of a substance and change the form of the substance. As a simple example, ice will turn into water at high temperatures, and water will solidify into ice at low temperatures. For general sword casting materials, it needs to be melted into a liquid to remove impurities. After that, let it turn into a solid sword. ”

Speaking of which, Kenichi put his right hand on the titanium ore. A cloud of purple Void Force shrouded the titanium ore. These titanium ores melted quickly at a speed visible to the naked eye.

"The melting point of titanium is 1668 degrees. First, I raised the temperature to over 1668 degrees. Because, the impurities of liquid titanium are easier to remove. This is the first step in forging a sword, smelting the material and removing impurities. ”

With Jian Yi's words, the temperature of this piece of titanium ore rose sharply, and finally all of it turned into liquid. A trace of impurities was completely removed by Jian Yi's Void Force. Immediately afterward, he took a few pieces of metallic minerals from the space watch and melted them down to purify them.

"The standard lightsaber of the military department is based on titanium, adding iron, manganese and other elements to create a high-strength titanium alloy. For non-mechs, wanting to build this alloy by hand is tantamount to a dream. ”

Kenichi fused the pile of liquid together. His hands shone rapidly, and countless purple lights surrounded titanium alloys and various metal minerals. These liquids change their shape rapidly.

Although Qiqi and Lin Miaomiao couldn't see anything special, Qin Yan's spiritual power would probe the ever-changing liquid suspended in the air clearly.

Each elemental liquid is evenly distributed in a titanium alloy solution and reacts with it. Different parts of the titanium alloy solution have completely different temperatures and densities. Even, at different moments in the same part, the temperature is ever-changing.

In the blink of an eye, the appearance of a sword appeared in front of Qin Yan.

"Now, I'm going to take the final step, install the lightsaber circuit and the lightsaber chip inside the sword. This step, the control of temperature and force is extremely precise, and there are few omissions, which is a failure. ”

Kenichi threw the lightsaber chip and lightsaber circuit from the space watch, wrapped it in a purple force, and sent it into the unfrozen blade.

Although the titanium alloy solution blocked the line of sight, Qin Yan's spiritual power still clearly observed how the lightsaber chip and circuit were installed in the sword body and integrated with the sword body.

It's an extremely delicate job. If there is no Void Force protection, or if the Void Force is slightly wrong, the lightsaber chip and circuit will be incinerated by the high temperature if they come into contact with the titanium alloy solution.

However, this step of the work, the sword took a few seconds, and it was easily completed.

Next, it is cooling, solidifying, and forming.

Three minutes later, as soon as the sword withdrew the Void Force, a lightsaber more than three meters long appeared in front of everyone.

The right hand of the sword rested on the hilt of the sword, and the Void Force was infused into it. The blade of the lightsaber suddenly exploded with a purple light, making a "snort" sound. No one would doubt the power of this sword.

"This is the sword!"

Jian Yi laughed softly, "Now, you understand, why no one has graduated from the Sword Casting Academy all year round, right?" Because, without becoming a mecha master and mastering the Void Force, you will never be able to truly forge a sword. And the students who enter the Royal Mecha Academy, who dares to guarantee that they can become a mecha master in four years? ”

Qin Yan and the three of them looked at the sword that Jian Yi had just built, and their hearts were full of shock.

It turns out that it is so difficult to forge a sword!

Precise data calculation, fine force control, and strong force support are all indispensable.

No wonder the number of swordsmiths is so scarce, and their status is so noble.

Lin Miaomiao raised her head and asked loudly, "Master Jianyi, how should we learn before becoming a mecha master?" ”

"It's simple, lay the groundwork."

Kenyi chuckled softly: "Recite the common sense of sword casting, understand the sword casting materials, practice the assembly of lightsaber chips, and the inscription of the lightsaber circuit." After becoming a mecha master, you can go further. ”

Kenichi put away the lightsaber he had just forged and continued, "In addition to this, there is the most important point, and that is to comprehend the sword heart. ”

"Kenshin?" Qin Yan's face was full of doubts.

"If you want to fish, you have to understand what the fish think. If you want to race a car, you have to master the performance of the car. In the same way, if you want to forge a sword, you must comprehend the sword heart. Comprehending Kenshin will not only allow you to learn to forge swords, but also improve your strength! ”

Jian Yi laughed softly, and the expression on his face was indescribably unfathomable.

"Master Kenyi, what is Kenshin?" Qin Yan asked in surprise.

"It's up to you to figure it out. Pack up, and tomorrow I'll take you to the Kendo Holy Land of Humanity, the Alpha System. ”