Even though it was just autumn, the human realm was already covered with snow more profound than the harshest winter, with longer nights and shorter days.

A magical battle between Song Yan and the Master of Heaven and Earth permanently altered the ecology of this realm.

Outside the Formless Ancient Race Secret Realm, snow reached beyond knee-deep, and many ordinary wild animals in the forest had already frozen to death, yet this was only the beginning.

Song Yan ventured out several times, witnessing a wasteland, a scene of the apocalypse.

Besides transforming the Mortal Realm into a Snow Country, he also distinctly felt the Profound Qi in many places begin to decay.

When the True Spirit Light extinguished, the Profound Qi began to go extinct as well.

When Profound Qi becomes exceedingly rare, not a single cultivator will be born in this world.

However, Song Yan saw much more information.

Along the way, with the changes in realm, power and cultivation resources also transformed.

In the Refining Profound Realm, what was needed was merely simple Profound Qi, with power manifesting as magic;

In the Crimson Palace Realm, the needs were Demon Blood or stronger body refining Xuan Technique, though the latter required True Spirit Jade, and power primarily resided in the physique;

In the Purple Mansion Realm, resources required were Profound Heart or Body Refining Secret Medicine, with power manifested as telekinesis, racial secret techniques;

In the Divine Infant Realm, Profound Yellow Material or secret medicine was needed, with power being magical treasures constructed from telekinesis, or one's own body;

In the Divinity Transformation Realm, what was needed was Taiyin and Taiyang Projection Fire, temporary Six Paths Talent, and power was the "Power of One Realm" and "one's own Little Celestial Dao Characters".

Now, with the reduction of the Fire of Taiyin and Taiyang in this realm, Profound Qi is quickly retreating, and all these happened precisely after his great battle with the Master of Heaven and Earth.

This can only mean one thing: the ultimate source of Profound Qi is actually the "Fire of Taiyin and Taiyang", and power should be the "Power of One Realm" and "complete Little Celestial Dao Characters".

The reason the Master of Heaven and Earth twisted and turned with him, speaking endlessly trying to stabilize him, and then barely suppressing him, indicates that the "Power of One Realm" of the Master of Heaven and Earth is almost entirely gone, his Divine Soul already cracked, his body gravely injured or even vanished.

'Without a doubt, this world likely does not have the resources to break through the Profound Yellow Realm.'

'Because the core resource must be the true Fire of Taiyin and Taiyang, the source of Profound Qi.'

'If the Master of Heaven and Earth still had a way to acquire this Fire of Taiyin and Taiyang, he wouldn't let his world become like this.'

'In any case, let's go to the Void and take a look.'

...

...

The realm restriction for entering the Void is actually a protection for the weak.

Those below the late stage of the Purple Mansion Realm, upon entering the Void, would be burned by the flames of the Void even if they did nothing.

Those above the early stage of the Divine Infant Realm, upon entering the Void, would attract Netherworld creatures or Void creatures due to their strong life aura.

The time limit for entering the Void is actually a protection for the landing site.

Since the Void Ruins are constantly moving, there is always a brief period every few hundred years when the least dangerous side faces this realm, and that... is when cultivators go up to find Profound Yellow Material.

But neither the realm limitation nor the time limitation could restrict Song Yan.

After a year of relative calm, upon hearing of the upheaval in the Sword Alliance, Song Yan chose to venture into the Void.

After half a year of exploration, aside from the increasing density of Netherworld creatures and more Corpse Demon-level beings, he found nothing.

Of course, saying he found nothing means he found nothing in terms of "escaping this realm", but he did gain a little otherwise.

First, he acquired a considerable amount of Profound Yellow Material, all of which he handed over to Tang Ningxin and Wang Susu;

Second, he confirmed that the source of the Light of the Void was not Taiyin and Taiyang, but more likely the enormous Dark Dragon Corpse that the Celestial Venerable spoke of, which matched what the Black Lotus Elder previously said about "entering the Void and feeling something calling him from afar, causing him to shudder with terror."

The Black Lotus Fire is the Netherworld Fire "Rakshasa Realm", and "Rakshasa Realm" was ultimately meant to return to the Dark Dragon Corpse, which also aligned.

Other than that, this gigantic Dark Dragon Corpse stretched out into the distance, obstructing the Void, so terrifying that even the Celestial Venerable in his peak almost had his soul fly into nothingness at the mere sight of it.

...

...

After the first return from the Void, Song Yan remained dormant for five years.

In five years, he temporarily gave up on causing trouble for the Master of Heaven and Earth again, as he realized the Master of Heaven and Earth himself was also beset with continuous troubles. If he were to fight again with the Master of Heaven and Earth, besides mutual destruction, there would be no benefit.

By that time, this world would be destroyed not by the Netherworld's Qi but by the "Eternal Night of the End of Dharma", as the Master of Heaven and Earth might likely pluck the remaining bit of the Fire of Taiyin and Taiyang for self-restoration, at which point... this world would lose its sun and moon.

However, during these five years, he accomplished another task, which was the refinement of the Celestial Demon. Using the Celestial Demon's Cause and Effect fragments as the base, he successfully created the Celestial Venerable Shadow Puppet, Tang Changsheng Shadow Puppet, Yin Yang Profound Dragon Shadow Puppet.

As for the Master of Heaven and Earth Shadow Puppet, he was unable to create it.

At the end of the fifth year, he ventured into the Void a second time.

This time, he lingered in the Void for a full two years.

The gains are as follows:

First, he confirmed one thing: when he initially entered the Void, he thought that the distant Light of the Void was involved in forming the Profound Yellow Material, but now he realized the opposite was true.

The Light of the Void did not participate in forming Profound Yellow Material; instead, it drastically destroyed it, consuming the thin layers of Profound Yellow Material and leaving what originally had been vast and abundant Profound Yellow Material.

Perhaps the bit of Profound Yellow powder that the late stage of the Purple Mansion could find in the Void Ruins was once a massive piece of Profound Yellow Material.

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