The Spirit Core of the altar has long recognized Rod as its master; as long as he approaches the altar, he can control it through his spirituality.

And the energy of the Star Marrow Altar comes from spirituality.

If there is no spirituality, one can also inject the soul into the Spirit Core.

The ancient gods once did this, which is why the internal space of the Spirit Core has so many monsters.

Due to the corrosion of numerous souls thrown into the core, the Star Marrow Altar previously functioned at a very low efficiency, yet still managed to condense such a magnificent Black Fog Wall.

This is why Rod is confident that he can carry out the "Eternal Sanctuary" plan.

Of course, Trolian's "Eternal Sanctuary" is not a separate space isolated from the world as originally planned by the ancient gods, but a highly efficient defensive strategy aimed at compressing the lengthy borders.

It not only has entrances and exits but can also continue to expand outward in the future.

Messy thoughts flashed by, and Rod took a deep breath, injecting a large amount of spirituality into the Spirit Core.

The monsters in that half-plane space have been cleared, and the pollution in the space has been purified by Rod using diluted Goddess' Tears.

Of course, the infiltration and corrosion from the black mist are ongoing and can't be completely shielded. However, as long as regular purification is done, clearing the already corrupted spirituality and eradicating monsters born from corrosive material is maintainable at a relatively acceptable level.

In the future, that space can even be used as a training ground, providing new warriors with opportunities for practice.

After all, if the "Eternal Sanctuary" plan truly succeeds as imagined, the number of monsters within Trolian will greatly reduce, no longer requiring a large number of mid- and low-rank combatants to maintain environmental safety.

Moreover, the fortress castle acting as the "Black Fog Great Wall Node" is a battlefield facing darkness, where only high-rank combatants are allowed.

Therefore, in such a future, aside from training, the opportunity for mid- and low-rank combatants to engage in actual combat will greatly diminish, which is detrimental to their growth.

Rod has thought extensively about this plan, considering every possible aspect with great clarity.

Of course, he's not revealing everything now, but plans to solve it little by little in the future.

"Sigh."

Rod sighed inwardly.

"Having such high intelligence really feels lonely. There's no choice; this must be the unrecognized pain of a great wise man."

With a flicker of spiritual light, Rod intensified the input, quickly injecting 100,000 units of spirituality into the altar core.

In Rod's spiritual sense, the altar brimmed with energy, emitting wisps of white mist.

"Very well, then rise, Spirit's Curtain."

Rod raised both hands high, and an invisible wave spread throughout the space, as if the world stage had drawn up an invisible curtain, isolating all spiritual disturbances.

Horus's stiff face showed significant change: "This feeling, it's a positional change... a dimensional ascension. This is a new space, a higher space."

The bald master shouted wildly: "It's the Spirit Realm. No, no, it's the high-level Spirit Realm... No, it's not right, it's the extremely high-level Spirit Realm... Star Realm!"

Dalyn looked at them in astonishment.

"The Star Realm... has descended here?"

The bald master shouted in intoxication: "That's right, it's the celestial curtain of the stars falling, arriving on Earth!"

Besides Horus and the bald master, many others present sensed the change in the space to varying degrees.

They gazed up at the bottomless sky, where dense black mist churned and clashed in the deep space.

Despite not knowing what exactly had happened, everyone silently prayed, hoping the Royal City's plan would succeed.

About half an hour later, the Spirit's Curtain completed its preliminary deployment, measuring approximately 30,000 yards in height, 500,000 yards in length, and 5,000 yards in thickness, just enough to cover the entire eastern defense circle.

The black mist slowly gathered into the Spirit's Curtain, but it was not very noticeable.

Horus asked: "How long does it take for the concentration of black mist to gather to Third Derivation or above?"

Rod estimated briefly and replied: "It might take a week or more; the concentration of black mist near the Royal City is too low, so this process will be relatively lengthy."

Dalyn asked gravely: "Does that mean the Black Fog Great Wall won't form until at least a week later, and our tests also need to wait at least a week?"

Rod nodded slightly.

"No, this time is too long."

Horus said seriously: "Is there a way to accelerate it?"

Rod pondered: "I can continue to elevate the position of the Spirit's Curtain, up to Second Derivation, Primordial Derivation, or even Primordial Black Fog level, so the Black Fog Great Wall will condense faster."

As soon as he finished speaking, both Dalyn, Horus, and the bald master had their expressions changed.

"No!"

They responded in unison.

"Primordial Black Fog signifies great terror; its appearance will bring forth ominousness."

Horus said solemnly: "The concentration of black mist must not exceed Second Derivation."

Rod frowned; black mist is not fog but a phenomenon, unaffected by wind, and any physical methods are ineffective against it; the position of the Spirit's Curtain is currently the only means to gather black mist.

If not elevating the position of the Spirit's Curtain, how can the Black Fog Great Wall be rapidly condensed?

Suddenly, a flash of inspiration crossed Rod's mind, recalling his combat experience in the Divine Tower of the ancient god of evil aberration.

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