"Semi-finished product?"

Chu Xiangyun repeated Kong Xunzhen's words with some surprise. She took off her blindfold and checked the Rubik's Cube in her hand repeatedly, but she could only see dazzling lines of spiritual power.

Finally, she blinked her sour eyes and reluctantly admitted that she did not see anything.

"Have you brought a pen and paper?" Kong Xunzhen's tone was always very calm and firm, making people unconsciously follow her words.

Chu Xiangyun searched in his bag, took out a notebook, turned to a blank page, and then handed it to Kong Xunzhen along with the pen.

While the other party was writing, he did not forget to explain to Chu Xiangyun on the other side.

"When you use this spiritual weapon, do you feel that as time goes by, its speed of change becomes slower and slower? Maybe sometimes you feel a little stuck."

Although Kong Xunzhen's words were questions, it was clear from her tone that she was very confident about it.

Chu Xiangyun's reaction was just as she expected.

"How does Teacher Kong know?"

Although the Rubik's Cube has not been turned even once, can it be judged just by relying on the complicated lines of spiritual power?

The tip of the pen fell on the paper and there was a rustling sound of writing, which made people calm down unconsciously. Kong Xunzhen continued without stopping.

"This is the basic skill of every caster."

"So why does this Rubik's Cube behave like this?" Chu Xiangyun asked.

Kong Xunzhen stopped writing, as if he was thinking, and the tip of his pen made black dots on the paper.

Hearing Chu Xiangyun's question, she smiled slightly and said: "This is because the manufacturer was too greedy and added too many different attributes to it, and the material of the spiritual weapon itself could not withstand so many changes, so it resulted in

The emergence of this phenomenon."

"Have you been using this Rubik's Cube for a long time? It will probably break in less than a week."

"Ah." Chu Xiangyun picked up the Rubik's Cube with some distress, and gently rubbed it with his fingers a few times, "I only got it more than three months ago..."

Kong Xunzhen raised his eyebrows in surprise and softened his tone.

"That's because you used it too often. It doesn't matter. I think its caster should have known this a long time ago." She comforted.

Then Kong Xunzhen seemed to have thought of something, and the sound of the pen tip rubbing against paper sounded in the air again.

After a while, she closed the cap of the pen in her hand and returned it to Chu Xiangyun along with the notebook.

"The above contains some of my thoughts on modifying this spiritual weapon... Under the original conditions, slightly changing the casting method and spiritual power input should be able to extend its service life."

Chu Xiangyun's hand that took the thing was froze in the air. She wanted to say that she didn't understand it at all, but looking at Kong Xunzhen's smiling expression, she swallowed her words inexplicably.

"...I know."

After many days, Chu Xiangyun finally waited for the casting class taught by Ren Fei himself.

When there was no one around in the classroom, she took a few steps towards the podium and patted Ren Fei, who had his face buried in a novel.

The other party was already asleep, and there were unknown water stains on the corners of his mouth, slightly soaking the paper.

Chu Xiangyun patted him several times before Ren Fei finally raised his head sleepily.

"Well..." She rubbed her eyes and blinked hard twice before finally seeing the person in front of her clearly. Before she could say anything, she grinned broadly.

"This is my good student Chu Xiangyun. Do you have any questions to ask the teacher?"

"..." He was obviously dissatisfied because he was woken up.

Chu Xiangyun thought to herself and decided to make a quick decision. She took out the page torn from the notebook from her pocket and handed it to Ren Fei opposite.

"What? Is it a love letter?" Ren Fei opened the paper and teased a few words.

However, when she saw clearly what was written on it, her expression suddenly changed. Even the hand holding the paper unconsciously exerted force, and her fingertips turned white.

"Who gave this to you?" she asked, her voice unexpectedly deep, even a little scary.

Chu Xiangyun was shocked by her and resisted the urge to step back. After a few seconds, he hesitated and said: "Yes..."

But as soon as she finished speaking, she was interrupted by Ren Fei.

"Is it Mr. Kong...that teacher from the Logistics Office?"

"...Hmm."

Ren Fei fell into silence, the atmosphere in the classroom was condensed, and Chu Xiangyun stood there not knowing whether to leave or stay.

After a while, Ren Fei put the paper into his pocket naturally as if nothing had happened, looked at Chu Xiangyun and smiled.

"Oh... I really didn't expect there to be such a powerful person in the school. You didn't mention my name, did you?"

Chu Xiangyun shook his head, "I said I bought this."

"That's good." After Ren Fei said this, he was silent for a few seconds, and then asked casually: "Did she say anything else to you?"

Chu Xiangyun relied on his excellent memory to retell the conversation between Kong Xunzhen and himself a few days ago. When he heard "This is the basic skill of every caster," Ren Fei couldn't help laughing.

Sound.

"Don't be deceived. There are very few casters in the world who can see the functions and flaws of spiritual weapons with just their eyes. Either practice makes perfect, or they have extraordinary talent."

Seeing that Chu Xiangyun wanted to refute, she immediately said: "For example, it is talents like your teacher and me."

"..."

"Of course, your talent is not bad. Although you are still not as good as me, but by accumulating experience through practice day after day, you will be able to catch up with me one day."

"..." Chu Xiangyun endured and endured, and finally said: "Teacher Ren, if nothing happens, I will leave first."

"Wait a minute." Ren Fei stopped her, put back his joking tone, and looked serious.

"Have you brought your Rubik's Cube with you?"

Chu Xiangyun stopped, took out the spiritual weapon from his pocket, and handed it to Ren Fei. The latter put it in his hand and looked at it several times before finally speaking.

"It does seem that it is used regularly. How is your progress now?"

"I have mastered all the transformed spiritual structures of this Rubik's Cube, but the recovery speed can only be controlled within thirty seconds at most." Chu Xiangyun replied seriously.

Memorizing all the changes in the attributes of hundreds of casting tools in three months without making any mistakes sounds like a lie, but Ren Fei has no doubts.

She also put away the Rubik's Cube, "I have some new inspirations... I'm going to modify this thing again and return it to you in a few days."

Originally, she was thinking of taking the time to make a new one later, but now it seems that there is no need to waste casting materials.

"That's right."

As soon as Chu Xiangyun took a step forward, he was stopped again by Ren Fei.

"Where are you in your spiritual arts class? Have you learned about the interaction between spiritual power and elements?"
Chapter completed!