Xu Lu's Invisibility Art

The secret treasure sat upright and neat, emitting a faint glow as if it had turned translucent.

A visible stream of light swirled once within the secret treasure before pouring into Xu Lu's body.

At first, Xu Lu felt a wave of cool refreshment, which then transformed into a burning heat.

This sensation of experiencing both ice and fire caused Xu Lu to let out an involuntary, rather misleading groan.

Xu Lu had absorbed spiritual energy twice before. The first time was when he accidentally activated the secret treasure left behind by his predecessor. The second time, he had set up a secret array based on the inheritance left by Lu Tong Yin.

During the first time, Xu Lu was completely clueless about the cultivation of secret arts, not knowing how to absorb the spiritual energy of heaven and earth. Thus, most of the spiritual energy converted by the secret treasure was likely wasted.

The second time was when Xu Lu truly began to cultivate with conscious intent, but the conversion efficiency of a secret array naturally could not compare to that of a secret treasure.

Only this time did Xu Lu truly experience the sheer pleasure of cultivating a secret art.

The amount of spiritual energy surging into his body was more than ten times greater than before!

With the distinct current of energy surging through his body, Xu Lu even wished this sensation could last forever.

Regrettably, after only a few breaths, a crisp cracking sound pulled Xu Lu back from his immersion.

Looking down, Xu Lu discovered that a crack had appeared on the replica of the Eight Great Secret Treasures of Da Huang Luo.

The crack ran deep, almost splitting the secret treasure in two.

It seemed that after one more use, this secret treasure would be completely ruined.

"Is it because the material of the secret treasure cannot withstand the power of the spiritual energy of heaven and earth that it has come to this?"

Xu Lu fell into deep thought. "Or could it be that using secret treasures as consumables is merely a way to extort wealth?"

He sighed. Regardless of the reason, he could only accept this reality for now.

Although he had acquired some knowledge of secret arrays from Lu Tong Yin's inheritance, replicating that secret treasure with his current skills was virtually impossible.

After receiving this replica of the Eight Great Secret Treasures of Da Huang Luo from Tu Gou, Xu Lu had studied it meticulously.

Even though it was merely a replica, in Xu Lu's eyes, it was far more sophisticated than any electronic product he had seen in his previous life.

To try and craft a smartphone with only a basic understanding of electrical circuits—was that not a pipe dream?

Under the current circumstances, purchasing replica secret treasures was the best method to cultivate secret arts.

"Fen Guang Hua Ying."

Xu Lu muttered to himself, and a faint halo suddenly lit up around his body.

Immediately after, a figure identical to Xu Lu appeared in mid-air.

The figure seemed almost solid as it took seven or eight steps forward before finally dissipating.

"When I cast the Fen Guang Hua Ying Art before, the effect could only last for three seconds."

Xu Lu silently calculated in his mind. "After this session of cultivation, the effect can last for about twenty seconds!

Even a replica secret treasure yielded cultivation results that far surpassed ordinary secret arrays."

Xu Lu could not help but sigh with emotion. This was what true cultivation felt like; using that crude secret array before had been a mere desperate measure. Having used a secret treasure, he no longer wished to cultivate with that rudimentary array.

"The cultivation of secret arts in this world seems far more fascinating than I imagined... Even spiritual and spiritual energy measuring devices exist."

Xu Lu put away the replica of the Eight Great Secret Treasures of Da Huang Luo, which now had only one use left, and took out two other items.

These were also part of his gains from the previous discussion assembly.

The two measuring devices looked similar to the compasses used by feng shui masters in his previous life, and their method of use was also very simple.

Xu Lu first picked up the silver spiritual energy measuring device. Following the instructions Jia Gu had given him, he channeled the spiritual energy within his body into the compass.

The light on the compass flashed, and a pillar of light rose from within it.

The white pillar of light rose less than three fen before its power depleted, slowly dissipating.

"According to Jia Gu, spiritual energy cultivation is divided into nine ranks, with the lowest being a First-Rank Secret Cultivator, whose spiritual energy appears white.

If the pillar of light reaches nine inches, it means one's spiritual energy cultivation has reached the peak of the First Rank.

I only have three fen right now. Ten fen make an inch, so I am still far from it."

Xu Lu sighed, then used the spiritual measuring device to gauge his mental strength.

The usage of the spiritual measuring device was identical to that of the spiritual energy measuring device, and the display method was also similar.

To his slight surprise, Xu Lu discovered that the pillar of light activated by his mental strength rose to a whopping nine inches!

Moreover, the white pillar of light showed faint signs of turning black.

A black pillar of light was the hallmark of a Second-Rank Secret Cultivator!

"According to Shu Sheng and the others, spiritual energy can be raised, but raising mental strength is extremely difficult. Ordinary Secret Cultivators usually have higher spiritual energy cultivation than mental strength, yet I am the exact opposite.

Is it because I transmigrated here, making my mental strength exceptionally powerful?"

Xu Lu muttered to himself.

"However, mental strength and physical constitution share a mutual relationship. If mental strength is water, then the physical constitution is the container.

Only when the container is large enough can it hold more water.

Therefore, mental strength cannot exceed spiritual energy cultivation by too much.

Conversely, if mental strength is too weak, it will also restrict the growth of spiritual energy cultivation.

My current spiritual energy cultivation is likely dragging me down."

Xu Lu quickly realized this principle.

"Now that I have Deyue Tower in my hands, money is no longer an issue."

Xu Lu muttered to himself, "As long as I have money, I can purchase replica secret treasures, and my spiritual energy cultivation will surely catch up quickly."

Cultivating spiritual energy required secret treasures and secret medicines. As long as these two could be supplied in abundance, spiritual energy cultivation would not be an issue.

Conversely, raising mental strength was the most difficult aspect for a Secret Cultivator.

For Xu Lu, however, this was not a problem at all.

"Researching and creating secret studies can raise mental strength. My current mental strength is actually being constrained by my spiritual energy cultivation, so there is no need to consider how to raise it for now."

Xu Lu pondered, "Come to think of it, this Fen Guang Hua Ying Art seems to utilize optics to deceive the eyes of others, thereby creating a visual illusion that makes them believe they see two people.

However, at the highest realm of this Fen Guang Hua Ying Art, one can transform the illusory into the real. I wonder what the principle behind this is."

Xu Lu thought of the secret art he had obtained at the discussion assembly.

Compared to the Da Ri Boxing Art, Xu Lu preferred this Fen Guang Hua Ying Art.

He envisioned himself as a graceful, white-robed swordsman, not a crude brute who only knew how to swing his fists...

These past few days, he had been constantly contemplating this secret art.

"Utilizing optical properties to affect others' vision, making them believe they see two people..."

Xu Lu muttered to himself, "But what if I did the opposite?

What if, by influencing the eyes of others, I made it so they could not see me at all?"

Xu Lu pondered, while simultaneously flipping through the optical knowledge he had learned in his previous life on his system panel.

"In his previous life, people had researched how to use light rays to create invisibility cloaks. In this world, spiritual energy can harmonize perfectly with science.

If I utilize this principle, then Fen Guang Hua Ying can not only split into clones but also—

Achieve invisibility!"

As he thought, Xu Lu began to experiment.

Having just finished cultivating with the replica of the Eight Great Secret Treasures of Da Huang Luo, the spiritual energy within Xu Lu's body was abundant.

Based on the principles of the Fen Guang Hua Ying Art, combined with his knowledge of optics and physiology from his previous life, he experimented continuously.

Time and time again.

Xu Lu was completely immersed, even forgetting the passage of time.

He did not know how many times he had tried. Many times, he felt his mental strength and spiritual energy completely depleted, but after resting and recovering, he would immediately resume his attempts.

Finally, in Xu Lu's mental world, another star suddenly lit up in the pitch-black sky.

"Secret Art, Invisibility!"

Xu Lu gave a low shout, and the spiritual energy within his body surged. At the same time, a gentle breeze swept around him, and the light rays seemed to bend.

A moment later, Xu Lu's figure vanished into thin air without a trace!

After a full minute had passed, Xu Lu's figure reappeared.

"One minute?"

Xu Lu fell into contemplation. "When I cast Fen Guang Hua Ying or the Da Ri Boxing Art, I can only sustain them for twenty seconds. Perhaps because I created this Invisibility Art myself, my understanding of its principles is incredibly profound. Thus, when I cast it, the consumption of both spiritual energy and mental strength is relatively low, allowing it to last much longer."

"This can be considered the first secret art I have created myself."

A faint look of pride appeared on Xu Lu's face. "It seems my talent as a Secret Cultivator is indeed exceptional."

With this thought, he repeatedly cast the Invisibility Art.

His casting speed grew faster and faster.

Eventually, with just a single thought, his figure would vanish without a trace.

And the duration of the secret art also increased by about ten percent from the original one minute.

At this point, Xu Lu felt a bottleneck.

No matter how much he practiced, the casting speed and duration of the secret art could no longer be improved.

He knew well that this was the limit of what he could achieve with his current cultivation.

"A casting time of about two seconds and a duration of one minute.

If utilized well, this Invisibility Art will definitely be far more effective than both Fen Guang Hua Ying and the Da Ri Boxing Art!"

Xu Lu muttered to himself, a long-harbored idea surfacing in his mind.

"Before, my strength was insufficient, but now, I can finally give it a try."

A cold gleam flashed in Xu Lu's eyes. "I, Xu Lu, am not someone anyone can just bully at will!"