Mortal: Even with a Heavenly Spiritual Root, I still have to try and get my hands on the Little Gree

After recovering his magical power, Mu Yu did not leave immediately, but began to review the situation of using the sword formation for the first time.

First, there's the old problem: the sword formation still doesn't activate quickly enough. If facing a truly powerful enemy, the moment the sword formation is activated will be the most dangerous time for Mu Yu.

Secondly, using the sword formation consumes too much mana.

The entire battle lasted less than the time it takes to drink half a cup of tea, yet Mu Yu had already exhausted most of his mana. He hadn't even had time to activate the full power of his sword formation, let alone unfinished, desperate killing move.

As for other minor issues, such as the fact that the Evil-Repelling Divine Thunder had not yet been integrated into the sword formation, Mu Yu was already too preoccupied to deal with them.

Ultimately, Mu Yu was quite satisfied with the Azure Origin Sword Formation he had deduced.

After all, it's only a semi-finished product. Being able to summon seventy-two Green Bamboo Bee Cloud Swords at the same time is already quite impressive.

Moreover, its flaws do not overshadow its merits. The fact that it was able to kill five cultivators of the same level in a very short time in its first battle is enough to prove the power of the Azure Bamboo Bee Cloud Sword and the Azure Origin Sword Formation.

However, next time we encounter this kind of enemy, we probably won't need to set up the Azure Origin Sword Formation.

Next, we need to modify the Qingyuan Sword Formation little by little to completely perfect it.

The fact that Mu Yu named this first sword formation the Azure Origin Sword Formation is enough to demonstrate the importance he attaches to it.

Even if it's not ridiculously powerful, it should at least be comparable to the Great Geng Sword Formation, which can kill enemies of a higher level.

Unfortunately, before reaching the Nascent Soul stage, Mu Yu could not see the specific arrangement method of the Great Geng Sword Formation in the Azure Origin Sword Art.

Otherwise, with the Great Geng Sword Formation as a reference, Mu Yu's Azure Origin Sword Formation should be even more powerful.

"First, we'll find Biling Island, then we'll refine a Core Formation stage puppet."

"After finishing all this, I need to find some books on sword formations, and also learn some sword techniques and sword skills."

"We also need Xin Ruyin's help to fill in some gaps regarding the Azure Origin Sword Formation."

"When it comes to formation talent, it's truly incomparable!"

"So many years have passed, I wonder if Ancestor Linghu has found any other golden pages."

"Given Qing Yuanzi's talent, the Qing Yuan Sword Technique and the Qingzhu Bee Cloud Sword are definitely not only at this level. We also need to look for other sword techniques from the Xuanjian Sect..."

"After all, a sword cultivator isn't someone who can be made up of just one cultivation technique or one magic weapon."

Planning her next steps, Mu Yu swiftly put away the Five Elements Reversal Battle, identified the direction, and continued on her way.

More than a month later, Mu Yu arrived at the location he had circled and began to search for Biling Island using the Mingqing Spirit Eye.

The northernmost part of Silver Shark Island is a place that would take ordinary cultivators several months to reach by flying, and it is near a small path called Thunder Sky Island.

With only this limited information, it is indeed quite difficult to locate Biling Island.

After all, there are countless isolated islands in this alien sea.

If Mu Yu didn't possess the Mingqing Spiritual Eye, which allows him to see through the content of spiritual veins and minerals, it would probably have taken even longer to find this Biling Island.

Even so, Mu Yu spent a full six months exploring islands, numbering at least eight hundred to a thousand.

Moreover, and more importantly, Mu Yu occasionally encountered islands containing spirit stone veins, which took up a lot of time to explore, and he eventually found that the content of these spirit stones was not very high.

Of course, these spirit stone veins are only located in the Chaotic Star Sea, and their content is not considered high.

If this were placed in the Yue Kingdom, it would cause several sects to fight over it.

But in any case, Biling Island has finally been found.

This island covers a vast area, almost the same size as Tianxing City.

Despite its vast size, the spiritual energy on Biling Island is extremely thin. There are hardly any rare spiritual plants, let alone any demonic beasts.

But it is precisely because of this that this giant spirit stone mine, which contains countless spirit stones underground, has remained undiscovered to this day.

Using his Mingqing Spiritual Eyes, Mu Yu surveyed the general distribution of the giant spirit mine, his mind racing as he considered how to set up an array to conceal its existence.

About a hundred years from now, someone will accidentally discover this giant spirit stone mine.

Mu Yu didn't know how that person found out, nor did he know the exact time, so he wanted to avoid these things as much as possible.

If it's absolutely unavoidable, then you need to dig up enough spirit stones before you're discovered.

The key is to find that top-grade spirit stone.

You should know that top-grade spirit stones are very precious even in the spirit world.

After rummaging through his storage bag for a long time, Mu Yu finally found enough materials to set up the formation.

Next, he set up concealment restrictions. Around the giant spirit stone mine, Mu Yu set up many concealment formations and maze arrays.

This kind of concealment formation can be easily fooled if a Nascent Soul cultivator doesn't search carefully.

Under normal circumstances, where would a Nascent Soul stage cultivator come to such a barren place?

The entire process of setting up the formation took Mu Yu more than a month.

A month later, Mu Yu began to build a cave dwelling in the richest part of the spirit stone mine.

Next, dozens of Foundation Establishment stage puppets from the storage bag were dispatched to mine.

Meanwhile, in order to prevent the mining work from affecting his cultivation and puppet making, Mu Yu specially split off a wisp of divine thought from his primordial spirit and placed it on the puppet.

Mu Yu had already cultivated the Great Evolution Technique to the third level, so splitting his primordial spirit was no challenge for him.

Sure enough, after splitting off a wisp of divine thought, Mu Yu could make the puppet act freely according to her own will.

Within a certain range, a puppet inhabited by divine consciousness is like a second clone, completely different from the previous puppets that could be controlled simply with divine sense.

In the following period, Mu Yu mined while refining Core Formation stage puppets.

Guided by his innate talent for seeking good fortune and avoiding misfortune, Mu Yu's creations of Core Formation stage puppets were almost impossible to fail.

Two years passed in the blink of an eye, and Mu Yu successfully used up all the materials needed to refine Core Formation stage puppets.

Instead, there were a total of one hundred and twenty-three Core Formation stage puppets.

Besides, Mu Yu's cultivation level has also increased to the mid-stage of Core Formation, while the Green Bamboo Bee Cloud Sword has not changed much except for being nurtured and refined.

If all 123 Core Formation stage puppets were released at once, even a Nascent Soul stage monster would be wary.

Unfortunately, although this thing can threaten the Nascent Soul stage, it has the same problem as the Azure Origin Sword Formation: it requires a certain amount of time to prepare.

After all, in battle, a Nascent Soul stage monster won't let you get into a fighting stance before attacking you.

The appearance of so many Core Formation stage puppets naturally depleted all the rare spiritual materials in Mu Yu's storage bag.

But it doesn't matter. The medium and high-grade spirit stones mined in the past two years have piled up into two small spirit stone mountains, one large and one small. Mu Yu has completely achieved financial freedom.

Unfortunately, that top-grade spirit stone was never unearthed.

After waiting for several more months, and filling two more storage bags with mid-grade spirit stones, Mu Yu finally couldn't wait any longer.

After filling the top layer of soil back in exactly as it was, Mu Yu temporarily left Biling Island and prepared to return to Tiannan.

More than twenty years have passed, and I have no idea what the situation is like in Tiannan.

After more than 20 years of development, to what extent has Xin Ruyin, this master of formations, grown in skill?