The azure sky, dotted with white clouds, and the birds soaring above, a diverse array of species—some gliding on membranes like Pterosaurs and bats, others powered by feathers and muscle, like the gulls.

Before him stretched an endless expanse of rippling blue sea, yet the ocean surface was thickly scattered with islands, large and small. All of them were incredibly verdant, choked with dense ferns towering two to three hundred meters high—a sight truly difficult to imagine on Earth. Fang Senyan found himself at a loss for words.

If he had to make a comparison, the sea before him resembled a placid lotus pond, and the islands were like densely packed lotus leaves, so close that it seemed one could leap from one to the next with a short, swift run.

What was even more astonishing was that this vista seemed to repeat itself, spreading all the way to the distant horizon!

Fang Senyan couldn't resist leaping out from the mouth of the pipeline, simultaneously extending his sensory tendrils to their maximum reach. If they could materialize, these tendrils would be like wisps of smoke, spreading out around him for a radius of one or two kilometers.

Sensing no immediate danger, Fang Senyan approached the water's edge, only then noticing that while the seawater appeared clear, it carried a heavy, fishy odor. Although the common saying acknowledges a certain smell to seawater, this scent was overwhelmingly strong. He retrieved a portable analytical instrument he often carried for field-testing water potability.

The analysis confirmed it was non-toxic, followed by a list of components: five cations, including Sr2+; five anions; and boric acid (H3BO3) present in molecular form.

Fang Senyan skimmed these components, but the summary provided by the analyzer stunned him into silence: "Analysis sample composition shows a striking similarity to the amniotic fluid of a human female in the third month of gestation, achieving a similarity rating of [Note: Amniotic fluid itself is colorless and transparent; the turbidity usually seen is due to contamination from fetal waste]." "This... This explains why the damned thing smells so intensely fishy!" Fang Senyan suddenly understood! He had almost taken a sip, thinking the clear liquid was drinkable, but now he felt violently nauseated.

As he drew closer to this sea of amniotic fluid, he realized the water must be extremely deep; it was a black abyss, unseeable to the bottom. The gaps between the islands were not as close as they appeared from above—they were separated by at least twenty to thirty meters.

Then, his sensory tendrils detected an astonishing fact! Every 'island' was actually a living organism! These creatures were not as robust as turtles or tortoises, but rather solidified masses formed from clumped moss, algae, and similar aquatic growths floating on the surface. Their life force was incredibly weak, feeling like an aged person on the verge of death, ready to expire at any moment.

The concept of Life Concentration might seem abstract and unquantifiable, but it was discernible through certain signs. For example, seeing trees whose leaves were already withered, or encountering an extremely gaunt, hunched old person walking with a heavy medicinal smell, seemingly on the verge of being blown over by the wind—these signals conveyed very low Life Concentration, suggesting life was near its end.

Conversely, if one were approached by an immensely strong Northeast Tiger whose every muscle rippled with fluid motion as it walked, or a young man with deeply tanned skin, sharply defined musculature, his damp hair plastered by sweat, radiating heat before he even drew near—that perception would convey a dense and potent Life Concentration.

While Fang Senyan was still bewildered, a downpour suddenly erupted from the heavens, torrential and instantly obscuring everything in a white sheet, accompanied by thunder and lightning!! Just as Fang Senyan prepared to shelter, he noticed something strange: where the seawater met the rain, catalyzed by the streaks of lightning, a miraculous chemical reaction occurred.

Organic matter began to form: amino acids and nucleotides—the most crucial small biological molecules universally present in flora and fauna, the very bricks and stones for building the edifice of life—followed by bacteria, and then single-celled organisms...

Fang Senyan watched the evolution of life span hundreds of millions of years of natural development compressed into these few minutes, leaving him slack-jawed with shock! Just as he expected to see humanity evolve next, countless shimmering lights surged up from the deepest parts of the sea!

The final life form to evolve was something Fang Senyan would never have predicted: Mayflies! The creatures most famous for living but a single day! Yet, the Life Concentration within every one of these mayflies was condensed and concentrated to an astonishing degree! A palm-sized mayfly possessed a life intensity that surpassed ten Blue Whales!

It was crucial to remember that Blue Whales typically live beyond sixty years, often exceeding a century. These palm-sized mayflies, despite possessing ten times the Life Concentration of a Blue Whale, were destined to exhaust it all within a single day. How blindingly brilliant must the light of life radiating from them be!

"This... this is the greatest, and most valuable, secret of Noah E Sector!" A slightly agitated voice suddenly spoke beside Fang Senyan's ear. Then, a beam of light shot out from Fang Senyan's Nightmare Imprint, quickly coalescing into a faint, shimmering projection.

Although the image was indistinct, faintly revealing feminine features, it radiated an indescribable majesty and holiness to Fang Senyan's eyes—a feeling almost demanding worship. She turned, facing the stunned Fang Senyan, and offered a gentle smile:

"Do not be alarmed. I am your Mother Space, Noah C Sector. I adopt this form to facilitate communication with contractors. You may also call me Eve."

Fang Senyan immediately understood. It explained why he felt such an upheaval in his spirit; Eve, the grantor of his power, was bound to possess such immense pressure. At that moment, the mayflies were frantically swarming the islands, devouring the trees and leaves, growing, and then copulating.

Mating is inherently a process of generating life; during the conception of offspring, the vitality of both mother and child becomes extraordinarily vigorous. In the real world, instances exist where pregnant women suffering from terminal illnesses miraculously recover during the course of pregnancy and childbirth. Now, inside Noah E Sector, the Life Concentration of these mayflies was elevated to an unbelievable degree through sexual reproduction!

"So, this is the method of purification," Eve murmured with a slight smile.

Fang Senyan couldn't help but ask, his tone respectful yet curious: "Though it may be presumptuous, could you explain this in more detail?"

Eve looked deeply at Fang Senyan before answering: "Given the merits you have achieved, you are certainly qualified to know these secrets. Our Noah Sectors were not created by humanity but are relics left behind by the Creators of the previous epoch. While the fundamental functions of all Noah Sectors are identical, their core methods for survival and combat each possess unique characteristics."

"It is like the transportation methods humans use in daily life—all intended for convenient travel. The core energy method for a bicycle is human pedaling; for an electric vehicle, it is electrical energy; for a car, it is petroleum; for a sailboat, it is wind power; for a nuclear submarine, it is nuclear energy; and for a steamship, it is the steam engine. Every Noah Sector operates similarly, each possessing a distinct core secret."

Fang Senyan instantly grasped the meaning and took a deep breath: "So, you mean the primary core secret of Noah E Sector lies within this sub-world before us?"

"Yes," Noah Sector C’s Eve affirmed decisively. "You are entirely correct. It now appears this entire world is being maximally exploited. The sole purpose of the life existing here is to provide a continuous stream of terrifying life energy that serves as E Sector's core power source! See this world as E Sector's most vital engine, its very heart!"

"These mayflies are creatures whose evolutionary speed has been catalyzed trillions of times over. The rich life essence they inherently possess is then subjected to a complete purification during copulation! Observe: after mating, these mayflies do not lay eggs but simply wither and burst open. Those white motes floating upward into the sector are the purified life essence energy, which is then supplied throughout Noah E Sector to support its operational needs!"

"But how can life be converted into energy?" Fang Senyan suddenly found the concept difficult to grasp.

However, one sentence from Eve stunned him into silence: "Think about the Extinction skill you use, or the Revival skill your teammate Reef uses. These are powerful offensive skills that require the expenditure of a certain amount of life force to execute!"

Fang Senyan was rendered speechless. He stared blankly at the astonishing scene unfolding, resembling a sky filled with fluttering snowflakes. He never imagined that a Noah Sector could advance to the point of using an entire world as an 'engine'! After a moment, he recovered enough to ask with difficulty: "Then, what can I do for you?"

Eve gazed upward for a moment: "You should have noticed that the extracted life essence is flying upward. This implies there must be a hidden energy absorption device in the air. While I am currently only an illusion with no combat power, my analytical and calculation abilities remain intact. Your task is to reach the location of this energy absorption device and simply remain there for a short while."