A quick glance.

It was evident that the body of the Void Kun had become much more withered and dim compared to before.

It was estimated that once it finished cultivating the "Brahman Demon True Saint Technique," it would turn into a complete carcass.

"If I don't use the Demon Core, it would be rather difficult."

The most essential part of a demon beast lies in its Demon Core!

Lu Changsheng planned to use the Demon Core of the Void Kun to refine a Spirit Treasure Embryo, supplement his Void Spirit Body Origin, and cultivate his Realm.

Therefore, to him, this Void Kun, which had just broken through the Fourth Rank, seemed somewhat lacking.

After casting a Cleansing Technique, he entered the hall.

"My lord."

"Father!"

Ling Zixiao and Lu Lingxiao, along with Lu Wangshu, were waiting there.

"Alright, I'll take care of this matter myself."

Lu Changsheng said directly, then communicated with the Sea Splitting Mysterious Whale through Divine Sense, inquiring about its True Spirit Tribulation and whether it had confidence.

The Sea Splitting Mysterious Whale immediately expressed that there was no problem in crossing the tribulation.

Its bloodline had already reached a critical point, and it hadn't completely digested the Double-headed Flood Dragon Demon Core, the Fourth Rank Stone Dragon Heart, and the Eight-Clawed Devil Fish within its body. The True Spirit Tribulation could help refine these completely.

However, there must be a suitable environment for crossing the tribulation.

And for it, the best environment currently is the Sea Eye of the Great Dream Marsh.

But the Sea Eye may have other demon beasts. Under normal circumstances, it wouldn't matter, but if sea beasts come to disrupt during the tribulation, it would be troublesome.

So besides reporting this, it also hoped that Lu Changsheng could assist by acting as its protector.

"Since you are confident, let's go."

Hearing this, Lu Changsheng nodded in agreement.

However, when calling upon the Golden-Winged Heavenly Peng, he thought for a moment and still released three gourds of Essence Blood from the Void Kun, which the Sea Splitting Mysterious Whale could use later as a great supplement.

"Are you sure there's no problem with crossing the tribulation?"

Lu Changsheng confirmed once more.

If the latter felt the tribulation was dangerous, he could spend time collecting some Heaven and Earth Spiritual Material to refine one or two Magical Treasures to assist with the tribulation and some Healing Pills.

After all, he had spent so much effort and energy to raise it to a point where its bloodline was advancing toward True Spirit.

If it failed the tribulation and perished under the Heavenly Tribulation, Lu Changsheng would be infuriated to the point of vomiting blood.

"Master, rest assured!"

The Sea Splitting Mysterious Whale, full of confidence, stated that its breakthrough was natural and not achieved by burning its bloodline to break limits.

"Alright."

Upon confirmation, Lu Changsheng nodded.

However, before leaving, Lu Changsheng, together with his son Lu Lingxiao and daughter Lu Wangshu, moved all the gains from the body of the Sea Splitting Mysterious Whale.

With his Tianyuan Lotus, Qiankun Shadow-Confining Belt, and Formless Treasure Wheel, moving Heavenly and Earthly Treasures became much more convenient.

"Tsk, tsk, tsk..."

Lu Changsheng looked at the jumble of various demon beast corpses, demon cores, crystal mines, and spiritual medicines, sighing unstoppably.

Although most were First Grade and Second Rank, with only a few of Third Rank,

once amassed to a certain quantity, it was quite terrifying.

Lu Changsheng estimated that the value of these miscellaneous corpses and materials added up to several million Spirit Stones.

However, given the current situation of the Lu Family, there was no longer a need to sell externally.

Special demon cores could be used to refine Foundation Establishment Elixirs.

Demon beast carcasses could serve as materials for Talisman-Making, Artifact Refining, puppet materials, etc.

Now the Lu Family's puppets were no longer limited to those made with his blueprints only.

They could now design and manufacture based on the materials, like the demon beast skeletons.

However, these puppets require more time and effort, unlike the simplicity and convenience of an assembly line.

"Zi Xiao, later on, could you please sort and clean these? Big Black and I are heading out."

After moving all materials to a grand hall at the City Lord Mansion, Lu Changsheng said to Ling Zixiao.

"Alright."

Ling Zixiao responded.

"Father, what does the True Spirit Tribulation look like? Could you take me to see and gain some experience?"

Lu Wangshu spoke up as her father and Big Black were preparing to head to the Sea Eye to cross the tribulation.

The tribulations known to ordinary cultivators are usually the Nascent Soul Heavenly Tribulation of cultivators or the Transformation Heavenly Tribulation of demon beasts.

"This Sea Eye is deep within the Great Dream Marsh, where both mana and Divine Sense are suppressed. You've experienced it before, and this True Spirit Tribulation's greatest danger isn't the Heavenly Tribulation itself, but Big Black's bloodline advancement, which could draw other Demon Kings, making it potentially dangerous."

Lu Changsheng said to his daughter.

He was not making this up but rather based on Big Black's introduction to the True Spirit Tribulation and conjectures about the Heavenly Tribulation.

As Hong Lian once said, for Core Formation cultivators breaking through to Nascent Soul, timing, geographical advantages, and human harmony are essential, along with mysterious destiny.

If the environment is unsuitable or times are unfavorable — such as when enemies come to cause trouble or rivals to seek revenge during the breakthrough — the success could be significantly jeopardized.

Just like the Supreme Elder of the Yiming Ghost Sect.

This person spent decades from when he leaked the intention of breaking through to Nascent Soul to achieving it, eventually relying on Liang Country's influence and consuming the origin of the Supreme Treasure [Myriad Ghosts Blood Pool] to withstand interference from the Heavenly Sword Sect before breaking through to Nascent Soul.

And then there was Absolute Sword True Monarch.

His cultivation level could have allowed him to attempt Nascent Soul much earlier.

But for safety, he awaited the emergence of the Tianyuan Secret Realm before quietly breaking through.

Demon beasts adhere to natural selection, with severe intra-species competition.

The Sea Splitting Mysterious Whale implied the tribulation wouldn't be too dangerous, so Lu Changsheng naturally made these inferences.

"Alright then."

Understanding the situation, Lu Wangshu immediately wished her father safety on his journey and success for Big Black in the tribulation.

"Once Big Black breaks through the Fourth Rank, I'll let you enjoy an excursion."

Lu Changsheng had promised earlier to let his daughter borrow the Sea Splitting Mysterious Whale for enjoyment, but over the years, the whale mostly slumbered, digesting the Double-headed Flood Dragon Demon Core.

So the promised excursion had been postponed.

"Thank you, Father!"

Even though she had been left hanging by her father with promises over the years, Lu Wangshu understood.

...

On this trip, Lu Changsheng not only prepared several Formation materials but also brought along the [Sun and Moon Taiji Mysterious Light Mirror].

After all, when it comes to tribulation, it's better to be prepared for any adversity.

A month and a half later, Lu Changsheng, riding the Sea Splitting Mysterious Whale, arrived at the Sea Eye of the Great Dream Marsh.

This Sea Eye was occupied by a Third Rank Late Stage Demon King.

"Alas, I really don't want to kill."

Lu Changsheng sighed.

But to avoid driving it away now and facing potential revenge with a mate later, Lu Changsheng had no choice but to commit to a killing spree, unsheathing the Great Luo Sword Embryo.

Much later.

"So poor!"

Lu Changsheng looked at the scattered crystal mines in the Sea Eye's nest, shaking his head as he spoke.

But on second thought, it was understandable; these Demon Kings typically hailed from the Starry Sky Sea.

Perhaps they didn't fare well or got driven out, fleeing here, hence they hadn't amassed much wealth.

Then Lu Changsheng set up the Formation at the Sea Eye.

It wasn't a Taboo Formation, just a Third Rank Formation that conceals the Qi Mechanism, and has Gathering Spirit, Healing, and Defense capabilities.

Although Lu Changsheng was a Top-Level Formation Master of the Third Rank,

the workload of a Taboo Formation isn't something a single person can complete.

Just like when a Second Rank Great Formation was set up at Bi Lake Mountain years ago, requiring many people and over a year.

After spending more than a month, Lu Changsheng completed the Third Rank Formation layout, quietly awaiting the arrival of the Sea Splitting Mysterious Whale's True Spirit Tribulation.

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