For two consecutive days, Ji Xian advanced all five elements techniques to level 3 at a rate of one level per day.

The speed of this upgrade, like a rocket, left Tuoba Yin speechless.

Of course, Lingling's cultivation speed is the same as Ji Xian's, one level per day.

However, after reaching the fourth tier, Lingling finally stopped and hasn't advanced in two days.

Because the higher the rank, the higher the requirement for the strength of the inner core.

This means increasing the strength of the inner core.

Tuoba Yin believed that as long as Lingling's inner core became stronger, her advancement speed would still be as fast as a rocket.

The most proper way to improve the strength of one's inner alchemy is through gradual, cumulative meditation over time.

Of course, there are shortcuts.

The shortcut is to directly absorb energy from the energy crystal core.

However, this method carries an extremely high risk.

If one is not careful, the inner core will shatter, and one's cultivation will be completely destroyed.

Tuoba Yin didn't care if others occasionally secretly took one or two energy crystal cores to cultivate.

However, Tuoba Yin strictly forbade Ji Xian and Ling Ling, these two geniuses, from doing so.

Because both of them are geniuses who are one in a million, one in ten thousand.

The slightest mistake could result in a huge loss.

But despite all his calculations, he never anticipated that Ji Xian would have a rebellious streak.

He wore a bracelet with 100,000 energy points when he went out.

Not satisfied with advancing one level per day, he secretly tried to absorb some energy points from the bracelet when he returned to his dormitory at night.

It was actually able to absorb it.

Moreover, Ji Xian didn't sense anything was wrong.

So, like an addiction, I absorbed hundreds of energy points in one night.

This energy, when converted, is equivalent to one or two hundred ordinary energy crystals.

There was nothing wrong with the inner core inside Ji Xian's body.

Having absorbed so many energy crystals, Ji Xian's control over the five elements' energy is now equivalent to that of a fifth-order being.

However, if Tuoba Yin finds out that I've advanced so quickly, he'll definitely be angry.

So Ji Xian kept it a secret.

During his cultivation that day, he told Tuoba Yin that he could also sense other energies contained in the air.

Tuoba Yin exclaimed in surprise, "Could it be that you also have a lightning spiritual root?"

"I don't know."

Tuoba Yin turned and left, then went to find a middle-aged woman.

The middle-aged woman wore a wide-brimmed hat and a pair of small, exquisite sunglasses on her nose. In her hand, she held a one-meter-long metal rod with a crystal bead embedded at one end.

This outfit makes her look half like an old witch and half like a fashionable woman.

Tuoba Yin said, "This is a teacher at the academy who teaches lightning-attribute techniques. You can call her Teacher Yi."

"Hello, Teacher Yi," Ji Xian said politely.

Teacher Yi nodded: "Hello." Then he turned to Tuoba Yin and asked: "Is this also your last disciple? The Lingling you found for me last time already surprised me. With the power of the five elements plus the lightning attribute, I can't even imagine how powerful he will become in the future. So, this one, could he also have the power of the five elements plus the lightning attribute?"

Tuoba Yin said, "He does indeed have the Five Elements Spiritual Root, but whether it is the Thunder Attribute or not, we'll have to wait for you to test it."

Teacher Yi nodded, raised one hand, and condensed a ball of lightning in his hand.

The lightning ball emitted a bright light and crackled with a loud popping sound.

"This lightning ball has a very strong electrical current. Try to communicate with and sense this current, and spread all the electrical current from the lightning ball in my hand."

The other forces that Ji Xian sensed in the air were this forces, but these forces were unusually active, far more so than any of the five elements.

Being able to sense something is one thing, being able to control it is another.

Ji Xian was at a loss for a moment, unable to use the power of his inner core to control these active forces.

Teacher Yi waited for a while, then slowly placed her hand on Ji Xian's forehead.

"This lightning-attribute electric ball has a very strong electrical charge. An ordinary person could be paralyzed if they were electrocuted. You'd better do your best to connect with these powers, or you'll be in big trouble."

Teacher Yi actually said such a thing.

Ji Xian was a little incredulous and said, "Teacher, it can't be that bad. If we can't communicate, I won't study this subject."

Teacher Yi smiled and said, "Only in a life-or-death situation can you unleash your greatest strength."

Ji Xian screamed inwardly: What the hell is this life-or-death situation?

As the dazzling ball of electricity drew ever closer to his forehead, Ji Xian was so blinded by the radiant light that he couldn't even open his eyes.

The piercing sound, like a hypnotic spell, grew louder and louder.

Ji Xian had no choice but to concentrate and, just as the electric ball was about to touch him, dissipate all the electricity.

Phew, finally succeeded.

Teacher Yi said with delight, "He has a lightning spiritual root."

Ji Xian was filled with complaints. "Is this how you guys test spiritual roots? If it fails, won't I be doomed?"

Tuoba Yin paced around happily, exclaiming, "Great! My two closed-door disciples both possess the Five Elements plus Thunder Spiritual Root. Their future strength is limitless. Wiping out the monsters in the Extinction Realm Cave is just around the corner!"

Teacher Yi nodded and taught Ji Xian the techniques and methods of controlling lightning.

Ji Xian quickly mastered the lightning technique to the first level.

Teacher Yi smiled and said, "He cultivates so quickly too."

“Yes,” Tuoba Yin was still pacing slowly, seemingly deep in thought, “Immediately summon all the academy’s senior staff and teachers; I need to hold a meeting!”

"A meeting?" Teacher Yi was somewhat surprised by the principal's sudden decision, but she didn't ask any further questions. She left the room to gather the people from the college.

Tuoba Yin sent Ji Xian to cultivate with Lingling and then ignored Ji Xian.

My dear reader, there's more to this chapter! Please click the next page to continue reading—even more exciting content awaits!