Outside the True Monarch-level world, the Hydra watched as the world underwent violent tremors, appearing as if it could collapse at any moment. Its eyes flickered with sharpness, weighing and hesitating. It could see what Lin Fei was doing—extracting the laws of a True Monarch-level world.

Typically, these laws could only be comprehended, and direct extraction was unusual. Undoubtedly, extracting them would accelerate the collapse of the True Monarch-level world.

The Hydra pondered whether a bold attack on the world at this moment might cause its immediate collapse, burying Lin Fei along with it. However, this was mere speculation on the Hydra's part.

Taking such an action would mean a fight to the death with Lin Fei. If Lin Fei survived, the Hydra knew it would be doomed. After much consideration, the Hydra decided against taking the risk. Despite many thoughts flashing through its mind, it ultimately chose not to act.

In the next moment, a figure emerged from the void—it was Lin Fei, unharmed, returning from the True Monarch-level world. The Hydra felt a surge of relief that it had restrained itself from taking any rash actions. If it had, given how quickly Lin Fei reappeared, the Hydra would have been unable to kill him and would have only provoked his wrath further.

Lin Fei gave the Hydra a deep look, slightly surprised that it hadn't taken advantage of his vulnerable state. However, since the Hydra cooperated, leading him to the True Monarch-level world and refraining from attacking him, Lin Fei saw no reason to slay it. Moreover, there was no direct conflict between Lin Fei and the Hydra. Taotie? Lin Fei had only incidentally saved it.

"Hydra, let's consider this matter settled," Lin Fei said calmly. "I have obtained the laws, and you can still devour this world. We both lose nothing. As for Taotie, since I've saved it once, I hope you can spare its life."

The Hydra, visibly relieved, nodded in agreement. "As True Monarch Lin commands, I will spare Taotie."

With that, Lin Fei stepped into a spatial channel, traveling through the void and disappearing without a trace.

The Hydra watched the collapsing True Monarch-level world, its eyes gleaming with sharpness. The world was deteriorating rapidly and might be completely annihilated in just a few days.

The Hydra, not wanting to waste such an opportunity, was now free of worries since Lin Fei had spoken.

"Devour!"

The next moment, the Hydra's nine heads opened their massive mouths, ready to use their innate abilities to devour the collapsing True Monarch-level world.

In the secret chamber within Ancient City, Lin Fei reemerged, having returned from his venture. He reflected on his unexpected gain – a True Monarch-level world law with eighty percent integrity, which was a substantial acquisition for him.

Lin Fei didn't hesitate to integrate this newly obtained True Monarch-level world law with his Saber World. Unlike the fifty-two Divine Realm world laws he had previously acquired, this new law was to be completely fused with Saber World, becoming an integral part of it.

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As the law integrated, Lin Fei could sense Saber World's power increasing significantly.

However, even with this enhancement, Lin Fei was uncertain whether Saber World was now strong enough to withstand all nine strikes of the ninth heavenly thunder tribulation. He needed to be absolutely sure of his strength before attempting it. Finding True Monarch-level worlds, especially those on the brink of collapse, was exceedingly difficult. The task he left in Great Dream City remained unanswered.

As Lin Fei pondered his next steps, wondering how much longer he should wait, a voice suddenly resonated in his ear: "Lin Fei, come see me in Great Dream City."

Surprised, Lin Fei recognized it as the voice of the Great Dream Ancestor. He was still in his secret chamber, so how was the Ancestor communicating with him?

The voice seemed to come from his ears, but upon closer reflection, it appeared to be directly in his mind. Could it be that the Great Dream Ancestor was sending messages from the realm of dreams? But how was that possible?

Lin Fei, having not entered the realm of dreams, was perplexed about how the Great Dream Ancestor could communicate with him through dreams. Unless the Ancestor had reached a level where he could manipulate reality through dreams, it seemed impossible. Only such a capability would allow the Ancestor to send messages to Lin Fei within the Divine Realm.

Despite his shock and curiosity, Lin Fei knew he had to leave for Great Dream City. Concentrating his focus, he soon re-entered the city and swiftly headed towards the residence of the Great Dream Ancestor.

The residence, located within Great Dream City, was peculiar – it remained hidden unless the Ancestor permitted its discovery. This mystery might be tied to some secret or characteristic of the realm of dreams, but Lin Fei didn't dwell on it.

Entering the Ancestor's residence, Lin Fei found himself in a grand hall where he saw the familiar figure of the Great Dream Ancestor, sitting calmly with a serene expression.

"Disciple Lin Fei pays respects to the Ancestor," Lin Fei greeted respectfully.

The Ancestor opened his eyes. "Lin Fei, come and sit," he said.

Lin Fei sat opposite the Ancestor, curious about the purpose of this summoning. The Great Dream Ancestor began, "Lin Fei, I hear your Great Dream Heart Sutra has reached the fourth level?"

Startled, Lin Fei realized the summoning was related to his cultivation. He responded honestly and respectfully, "Yes, Ancestor, my Great Dream Heart Sutra has indeed reached the fourth level, and I can now enter the fourth layer of the dream realm. However, I've heard there is a fifth level to the Heart Sutra, yet it feels as though my cultivation is already complete..."

Lin Fei took this opportunity to express his confusion and seek guidance from the Great Dream Ancestor, who held profound knowledge and understanding of the Great Dream Heart Sutra and its mysteries.

Lin Fei felt that he had reached the culmination of the Great Dream Heart Sutra at its fourth level. He had no inkling about the fifth level, which seemed shrouded in mystery.

The Great Dream Ancestor nodded in response to Lin Fei's query, "Indeed, your intuition is correct. The Great Dream Heart Sutra truly comprises only four levels. Once you cultivate to the fourth level and can enter the fourth layer of the dream realm, it signifies that you have reached completion. As for the fifth level, it is intrinsically linked to my path and the secrets of the dream realm. Thus, the fifth level of the Great Dream Heart Sutra can only be imparted personally by me. To receive this teaching is to become my direct disciple. Lin Fei, are you willing to become my disciple?"

Lin Fei was startled by the proposition of officially becoming a disciple. Theoretically, all members of the Great Dream Sect were disciples of the Great Dream Ancestor, but this was only in theory. To become a true disciple of the Great Dream Ancestor required a formal initiation. Lin Fei now had this rare opportunity to become the direct disciple of the Great Dream Ancestor.

However, Lin Fei didn't immediately accept the offer. After a long hesitation, he finally asked earnestly, "Ancestor, may I know why? Why are you willing to take me as your disciple?"

Despite his inner desire to become a disciple of the Great Dream Ancestor, Lin Fei needed to understand the reason behind this sudden offer.