He saw what? A system that was generating its own electricity without an external energy supply!

Given that Miyue's ability was of the enchantment type, the answer was obvious. She had given a brand-new characteristic to the metal frame, using magic to provide the energy source.

"How did you do it?" Roland exclaimed.

"You said that electricity and magnetism are interconnected and inseparable. I couldn't help but think, since my ability can give objects magnetism, could it also generate lightning? You said that creating lightning requires changes in magnetism, so I tried attaching repeatedly changing magnetism to copper wires, and it turned out like this..." Miyue answered cautiously, her eyes full of anticipation.

So that's how it is... the prince thought. It's true that an electric current will generate a magnetic field, but a magnetic field doesn't unconditionally generate an electric current. The latter must act on a closed loop with a change in magnetic flux—and whether changing the magnetized area or changing the strength of the magnetic force, external energy is required to achieve this.

Miyue's new ability replaces this part, causing the magnetism to change on its own without external interference. If it were before, Roland would definitely think this was a perpetual motion machine, but now he understands that witches' abilities cannot be measured by common sense—the enchanted magnetism may not really come from magnetic poles, just like Blackfire isn't fire.

These are all effects manifested by magic.

The only thing he was curious about was, had Miyue never noticed the magnetic changes in enchanted objects before?

When Roland asked this question, she first nodded, but then quickly shook her head, "At the Cooperative, I also thought about making the magnetism of objects change at will, and reducing the magnetism when not in use to avoid causing trouble for other sisters, but it seemed to have no effect. The object's magnetism always remained at a fixed level. I thought this idea was impossible to achieve, so I didn't try again."

As expected, Roland turned to Nightingale and asked, "Her magic form..."

"It has solidified," Nightingale emerged from the mist, smiling. "It's like a wave of surging blue water."

Miyue's voice immediately became excited, "Could it be that I really—"

"That's right, your ability has evolved," Roland affirmed. "Without long-term unremitting practice, it would be impossible to grasp the key to advancement so quickly. You performed exceptionally well. From today on, you are the sixth witch in the Witch Union to have an evolved ability."

"Congratulations," Nightingale said with a smile as she went over and patted her head.

"Then can I do more for Your Highness now?" Miyue's eyes sparkled.

"Yes, more than you can count," Roland curled his lips. "Just as I said before, your potential is limitless. But... rest well for now. The dark circles under your eyes are almost as big as your fists. In the afternoon, let me test your ability properly."

"Yes!" She nodded vigorously.

After Miyue left the office, Nightingale immediately closed the door and leaned over. Instead of returning to the desk or the floor-to-ceiling windows as usual, she flashed close to Roland, excitedly pressed down on his shoulders, and bent over—the pale golden hair falling on his cheeks made him feel slightly itchy. Looking at her watery eyes and soft red lips, Roland's heart suddenly beat several times faster.

Eh? What's going on! Could it be that she wants to here with me... but it's still broad daylight.

"Tell me the method quickly." Nightingale's words made the prince stunned. Wait... the story development doesn't seem to be what I thought it would be?

"What method?"

"The method to evolve without understanding the *Foundations of Natural Science Theory*," she said excitedly. "With Miyue's exam scores, it's impossible for her to understand the contents of this book, but you still made her evolve a new ability! What should I do? Do I have to practice with 'little toys' too?"

Uh, so it's about evolution, this request is really regrettable—no, it's a relief, Roland cleared his throat and gathered his thoughts. "It may be difficult for your ability to break through by enlightenment."

"Why?"

"According to Agatha, evolution requires witnessing phenomena related to the ability in reality, and your mist is so incredible that I don't know its specific principle, let alone guide you to recognize it," Roland explained. "If you want to condense magic, I'm afraid there is ultimately only one way to go, and that is to master all natural and physical knowledge, and advanced mathematics is also a necessary skill."

Nightingale's expression immediately collapsed. She walked weakly to the recliner and leaned softly on the back, as if her body had been hollowed out.

After lunch, Roland spent half a day conducting a comprehensive test of Miyue's new ability.

He named this ability "Unstable Magnetism." Like the previous magnetism, it can be attached to any object and undergoes periodic changes according to the magic injected during the enchantment, but it has almost no current effect on insulators.

In addition, her magic is also the lowest of the evolved witches, only able to light up two magic stones on the Divine Will imprint, half a stone less than Maisie. And the enchantment-type ability has a very high requirement for magic power. The larger the upper limit of magnetic changes and the longer the duration, the more amazing the required magic power. After a series of actual tests, he found that Miyue's new ability was relatively stable as a battery, but it was far from enough to drive a large motor and reach the power of the active steam engine—testing with a DC motor converted from the initial electrolysis of water gave poor results. The motor rotor enchanted by Miyue with all her magic could only maintain half a day of operation, which almost negated its practical value as a motive power.

However, Roland did not reveal this to Miyue, but encouraged her to continue practicing her new abilities and not to neglect her studies—evolution was already not easy for her, and any bad news could make her depressed.

Fortunately, ability evolution is not a one-time deal. As long as Miyue can make another breakthrough through systematic learning, there is still a chance to make up for the lacking magic power.

In addition, Roland also thought of the method Agatha mentioned of multiple people working together to create luminous stones—if there is a witch who can control or transfer magic power, it can bypass the limitations of Miyue's own insufficient power.

In the evening, he found Tilly Wimbledon.

"Magic control type auxiliary witch?" After listening to the prince's narration, she pondered for a moment, "No one on Sleeping Island has such an ability."

"Is... that so?" Roland couldn't help sighing. It seemed that Miyue could only rely on her own efforts to improve.

However, Tilly's next sentence made his expression change, "But I know where you can find such a witch."