At that moment, Yi Tianxing witnessed firsthand the domineering nature of the chaotic aura.
He clearly saw the mud being swallowed the instant it entered the chaotic space, vanishing silently without a trace. Moreover, the chaotic aura within the space seemed to grow slightly stronger—not by much, but the increase was real and tangible. The mud was effortlessly refined.
Additionally, a portion of the newly formed chaotic aura directly flowed into the tower, merging into the fifth floor of the treasure tower. The internal space of the tower naturally expanded as a result.
For any world, chaotic aura was an extremely pure form of nourishment. When infused into the tower's internal space, it naturally promoted its growth and expansion at a rapid pace.
"The size of the chaotic space is in equilibrium with the tower's internal spaces. As the chaotic aura within the chaotic space increases, part of it naturally infuses the tower spaces. This means that, as long as there are sufficient resources, expanding the chaotic space also expands the tower's internal worlds."
Sensing this, Yi Tianxing immediately came to a realization.
Previously, before the Spirit Pearl had merged with the Hongmeng Heavenly Emperor Tower, information he had obtained from the tower indicated that he would need to refine vast quantities of heavenly treasures—or even temper the tower with his own true energy—to gradually grow its internal spaces. The refinement process was time-consuming, especially with top-tier materials, which could take an eternity.
But now, thanks to the fusion of the Spirit Pearl, the treasure tower had mutated.
This chaotic space was like a primordial smelting furnace, capable of thoroughly melting vast quantities of heavenly treasures into pure chaotic aura, which would then nourish and expand the tower's inner worlds.
This chaotic aura was far superior to any natural treasure.
Chaos was the origin of all things; from chaos, everything could be born. When chaotic aura infused the tower's worlds, it naturally carried with it the laws and Dao rhymes of heaven and earth. Normally, chaotic aura would destroy and devour a minor world, reducing it to primordial chaos. However, because the Spirit Pearl had merged with the tower, the chaotic space now nurtured the tower worlds instead of destroying them, creating a profound cycle of growth.
It was a mystical transformation.
These realizations flashed quickly through Yi Tianxing's mind before he put them aside. Right now, the only thing he needed to know was that the Hongmeng Heavenly Emperor Tower indeed possessed the ability to devour and refine the swamp's mud. His earlier conjecture was completely feasible.
A wave of joy surged in his heart.
"Devour it. Devour it all! This swamp isn't part of the Eternal World, so there's no need to fear being marked or attracting negative karmic ties. This is a feast—a genuine, massive feast!"
Yi Tianxing was thrilled.
Ever since obtaining the Hongmeng Heavenly Emperor Tower, he had been worried about how to evolve the internal spaces. Now there were five internal worlds, and he knew there would be more in the future. With each addition, the process would become increasingly difficult. When a new world was added, the existing ones would shrink slightly to nourish the new space until all reached equilibrium. It was a highly inconvenient process.
Thus, any opportunity to strengthen the tower could not be missed.
Especially now, faced with such an enormous swamp world.
"I wonder what kind of transformation the tower will undergo if I devour the entire swamp."
This thought flashed through his mind.
Boom!!!
The treasure tower unleashed its full might, emanating a tremendous suction force. The swamp mud surged like a flood into the chaotic space, where it was swiftly refined into streams of chaotic aura. Although the mud itself was unremarkable, it contained potent toxins and strange energies, rich with natural elemental force. Refining it caused the chaotic aura to swell continuously.
The chaotic space expanded.
The tower's internal worlds grew rapidly.
The entire process was visible to the naked eye.
Outside Yi Tianxing's body, the devouring created a massive swirling vortex of mud centered around him. Everything nearby was sucked into it without resistance.
The swamp was vast beyond measure.
As the Hongmeng Heavenly Emperor Tower continued its devouring, Yi Tianxing's body gradually sank deeper and deeper.
In a short time, he reached the swamp's bottom.
Above his head, the tower hovered, swallowing the falling mud and leaving a strangely hollow space. The mud couldn't fall down—it was devoured the moment it tried.
This delicate balance maintained itself.
Even though there was no air at the swamp's bottom, holding his breath for a day and night was no issue for Yi Tianxing.
"What is this underfoot?"
Standing at the swamp's bottom, he felt something solid underfoot.
He reached down and picked it up—a green crystal.
The moment he held it, a strange power flowed from it, resembling the miasma he had sensed before, but much purer.
"Miasma Crystal!"
"This crystal was formed by condensed miasma energy. It's an incredibly rare natural treasure, useful for crafting divine weapons, alchemy, and creating poisons or potions."
The Wordless Heavenly Book in his body immediately transmitted the information.
These crystals were extremely rare. They could even serve as critical materials for opening certain vital apertures in cultivation, making them invaluable treasures.
"Excellent! I didn't expect to find something like this hidden in the swamp!"
Yi Tianxing quickly stored the Miasma Crystal in the tower.
He continued forward—and soon found another Miasma Crystal.
"Looks like there's no shortage of these crystals here. No wonder—the endless miasma of this swamp could naturally give rise to such treasures."
Delighted, Yi Tianxing began carefully collecting every crystal he found.
Piece by piece, he gathered them, storing them safely in the tower.
He had no intention of refining the Miasma Crystals immediately. While refining them would indeed accelerate the tower's growth far more than mere mud, the crystals' practical value far exceeded what they could offer as fuel.
Such treasures, formed over countless years, were best preserved.
Moreover, the tower's growth from devouring mud was still impressively fast. At that moment, the tower's internal space had expanded to over eleven miles across, with thicker ground layers. Growth continued rapidly.
Plop!
Plop!
As Yi Tianxing roamed the swamp's bottom, he tirelessly collected crystals. Over the course of an hour or so, he had amassed four to five thousand pieces—an astonishing amount.
Meanwhile, the tower's internal worlds expanded to a radius of twenty miles.
Compared to the beginning, the size had doubled. Not only the surface area but also the volume had expanded exponentially, enhancing the worlds' strength many times over.
The transformation filled Yi Tianxing with irrepressible excitement.
The stronger the Hongmeng Heavenly Emperor Tower, the stronger he would become. At a certain point, the tower's growth would even start feeding back into his own cultivation, yielding unimaginable benefits.
But just as he continued to explore the swamp, a sudden thumping sound, like the beating of a colossal heart, echoed around him.
"What's that? Something alive? Could a terrifying beast be lurking in the swamp?"
A shadow of concern crossed Yi Tianxing's mind.
Any beast that could survive here would surely be extremely dangerous.
Especially in such an environment, where it would have every advantage.
However, Yi Tianxing didn't retreat.
Sheltered by the treasure tower, he advanced cautiously toward the source of the thumping.
The treasure tower continued swallowing mud with terrifying force, causing the entire swamp to visibly lower, such was the scale of the devouring.
"What is that?"
As he drew closer to the source of the heartbeat, Yi Tianxing's eyes widened slightly, his pupils contracting sharply.
In front of him, he saw a green radiance glowing softly.
Inside the radiance floated a green heart, seemingly alive. Ancient, mysterious patterns covered its surface. It pulsed rhythmically, drawing vast amounts of natural elemental force into itself. Each beat sprayed out jets of green mud, which merged seamlessly into the surrounding swamp, becoming indistinguishable from ordinary muck.