Lin Mu stood far from the base he had established and chanted the calming heart sutra.

He did so for a couple minutes, after which he felt like he was in his optimum condition.

'No better time to do it than now...' Lin Mu said in his mind before focusing on the Apertures within his chest.

Now, both the first and second apertures were fully filled and Lin Mu was close to opening his third Aperture. The only reason he had not done that was due to the fact that he had used the Tri Essence Immortal pill not that long ago and still needed to wait a few more days before using the next one.

Though he only had half the original number of Tri Essence Immortal pills left now. But they were still more than enough to help him open his Third Aperture as well as completely fill it.

Or at least that was what Lin Mu hoped.

But since there was still time before he could do that, he decided to train his control over the Immortal Essence instead.

And the way he was going to do that was to learn how to use the Boulder Collapsing Fist's first form again. After all, unlike Vital Essence, Immortal Essence was something that would be rejected by his body after a short time and would dissipate.

~HUU~

Taking a deep breath, Lin Mu pulled out a wisp of Immortal Essence from his first aperture and guided it to his right arm. This much was not an issue for him and was accomplished with ease.

But this was not enough to use the First form of the Boulder Collapsing fist at all. Thus he pulled out another wisp of Immortal essence from the first aperture. Lin Mu made sure that he could maintain control over them both in his arm, before attempting to draw out the third wisp.

He repeated this process several more times until he had finally gathered ten wisps of Immortal Essence within his arm.

'It's certainly getting harder now.' Lin Mu could tell that if he lost focus even for a moment, all these Immortal Essence wisps would dissipate.

What he now needed to do was to utilize the method of the Boulder collapsing fist and make the Immortal Essence Wisps spin.

"Here goes nothing..." Lin Mu willed all ten Immortal Essence wisps to come close and start to spin.

Having done this during the opening of the Aperture, it wasn't an issue. But once the unique circulation method of the Boulder Collapsing fist was added, Lin Mu realized the difficulty.

When using the Three Apertures Invoking Technique and opening an Aperture, one would rotate the Immortal Essence wisps in a stable orbit making it easier for him to continue to the process.

But in the method of the boulder Collapsing fist, there was no stable orbit. Instead, the Immoral Essence wisps would spin and turn into a Spiral.Published by Nôv'elD/rama.Org.

And when the Immortal Essence wisps were in the spiral, they would have to continually shift their positions making it quite difficult. With the Vital Essence this was not an issue since Lin Mu simply needed to control them without any resistance from the body.

But in the case of the Immortal Essence wisps, not only did he needed to control them to spin in a spiral, he also had to ensure that the force from his body wouldn't make them lose their positions.

And if he made a mistake during this, getting injured wasn't unusual.

~SHUA~

After a few minutes of work though, Lin Mu managed to get the Immortal Essence wisps to spin. But they were still not at the level he would want them to be at. After all, if it took him a few minutes to prepare the skill, it would be unusable in most battles.

He needed to be able to use it at a moment's notice or he would be caught off guard for sure. Not to mention, with the volatility of the Immortal Essence, he might still get injured if he was interrupted during the use of the skill.

'It's ready...' Lin Mu could feel the momentum of the Immortal Essence within his arm.

It was spinning nonstop and was threatening to burst out of his arm.

"No use in waiting, it's now or never!" Lin Mu raised his hand and punched down at the ground.

Boulder Collapsing Fist: First Form- Impact!

~RUMBLE~

As soon as his first made contact with the bloody soil, Lin Mu felt it disintegrate.

It was a strange feeling and made him think that he had touched a thin wall made out of dust.

"Agh!" And after this momentary feeling, the pain finally spread through his arm.

His skin cracked and shone in gold, his True Gold Body Forging Arts trying to protect him from damage while the energy of the skill transferred to the ground.

With how potent it was, Lin Mu could passively sense it spreading through the ground. In less than a second, it had already covered an area of over a hundred meters. But that was just the surface. Lin Mu couldn't tell how deep it had gone.

~KABOOM~

And after a short delay, it finally happened.

The ground spanning an area hundred meters, directly exploded and shot backwards.

~THUD~THUD~THUD~THUD~

Lin Mu's body was pelted from the stone fragments that were recoiling from the impact and was knocked upwards.

But he didn't dare to close his eyes and observed everything. After all, he needed to know how his skill worked and affected the environment before being able to use it in a battle effectively.

~TREMBLE~

After the initial explosion though, the entire ground directly sank inwards. All the rocks and stones inside it had been pulverized and only soil and sand were left there. Lin Mu fell back into the sand pit he had created and was surprised.

"The effect changed... it doesn't just explode it, but breaks down objects into smaller particles..." Lin Mu analyzed.