From Joy of Life, the Tian Gang is reversed

Chapter 617 Annihilating Xuan Family Disciples at the Cosmic Light Realm (Although it's late, it's still the third update)
The Tide of Time and Space, located at the border between the Immortal Realm and the Xuanhuang Great World, is a vast and boundless wasteland formed by countless fragmented spaces, distorted time, and violent cosmic energy. Even ordinary giants of the Longevity Secret Realm must proceed with extreme caution when venturing into it, for the slightest carelessness can result in being torn apart by the chaotic power of time and space, or being swept into unknown dimensions and eternally perish.

Li Chengqian and Fang Qingxue were not in a hurry to track down Hua Tiandu and the others.

Knowing the original work well, he knew that there was a real and a fake Heavenly Martial Treasury. The real treasury was integrated with the world barrier and hidden deep in the tides, so it didn't need to be a key.

Most importantly, Hua Tiandu and the others from the Feathered Gate are not like him, who can come and go freely in this spacetime tide. They need to wait until the night of the full moon when the spacetime tide weakens to enter. Hua Tiandu's luck is insufficient, and he is not considered a true successor of the Heavenly Martial Treasury. He is just a lucky guy. Even if he enters the true treasury, he will not be able to obtain the inheritance for a while.

But I am different. With the World Tree in my hands, as long as I enter the Heavenly Martial Treasury, under the influence of the same origin, the Key of the Wild God will not escape my grasp.

Within the tides of time and space, the countless turbulent currents of space and time provide the best place for him and Fang Qingxue to cultivate.

Therefore, after entering the spacetime tide, the two chose a relatively secluded node that was constantly being eroded by spacetime storms and began to cultivate.

"Qingxue, the spacetime tide is the best place to comprehend the laws of time. I intend to break through to the fourth level of the Longevity Realm here, and you can also refine your grotto-heaven to perfection, laying the foundation for your future breakthrough." Li Chengqian held Fang Qingxue's hand, and the two of them merged their auras. The Taiyin Refining Technique and the Great Chaos Thunder Technique complemented each other, jointly resisting the pressure from the outside world, while greedily absorbing the mysteries of spacetime.

Here, time loses its steady flow, sometimes trickling like a slow, agonizing stream, and at other times rushing like a mighty river. Space itself is layered upon layered, with fragmentation and rebirth constantly unfolding.

Li Chengqian's mind was completely immersed in comprehending the laws of time. The Great Dao Golden Core within his body, which fused with thirty-three Great Daos, trembled slightly, resonating with the spacetime fluctuations around him. The Taiyin Refining Form Technique analyzed the veins of time at an unprecedented speed. He seemed to see the phantom of the river of time, and fragments of the past and future flickering before his eyes.

An unknown amount of time had passed—perhaps a moment, perhaps years. In Li Chengqian's perception, the boundaries of time had become blurred. Within his grotto-heaven, the previously relatively stable flow of time began to become controllable; with a single thought, he could accelerate or slow down the passage of time within a small area. This was a sign that he had touched upon the laws of time and was about to step into the Realm of Cosmic Light!
However, at this crucial moment of cultivation, two malevolent auras approached stealthily, like venomous snakes.

The Xuan family of the Holy Light Great World: Xuan Xia and Xuan Ying.

Both were experts from the Longevity Secret Realm, traversing the tides of time and space, searching for traces of the Heavenly Martial Treasury. They happened to sense a powerful energy fluctuation and the aura of cultivators here, and thought they had discovered some treasure or a lone fat sheep.

"Senior brother, look! Those two seem to be in deep seclusion!" Xuan Ying stared greedily at Li Chengqian and Fang Qingxue, who were enveloped in clear light and lightning.

Xuan Xia's sharp gaze swept over Li Chengqian and Fang Qingxue, a hint of surprise flashing in his eyes, which was then replaced by a deeper greed: "What a magic weapon! What a powerful aura! These two have a solid foundation and must have a great secret! Taking advantage of their crucial cultivation stage is the perfect opportunity to strike!"

The two exchanged a glance, a tacit understanding suddenly formed, and they launched a sneak attack without hesitation!
"Holy light shines everywhere, purifying heresy!"

Xuanxia made the first move, opening her cave heaven. Endless holy white light transformed into a pillar of light capable of purifying all things and melting the void, carrying the will to pierce through everything, and struck directly at Li Chengqian's back! Xuanying then summoned a holy light longsword, its sword light flickering and transforming into thousands of sword threads, sealing off all directions and slashing towards Fang Qingxue, intending to interrupt her protection.

This attack was ruthless and cunning, and the teamwork was impeccable. If an ordinary cultivator in the Cave Heaven Realm were disturbed during deep enlightenment, they would be seriously injured even if they did not die!
However, they underestimated Li Chengqian's perception and overestimated their own strength.

Just as the holy light was about to engulf him, Li Chengqian suddenly opened his tightly closed eyes! There was no anger at being interrupted in his cultivation, only a cold indifference, as if he had already seen through everything. "Ants, utterly ignorant."

He didn't even get up; he simply pointed his fingers like a knife and made a seemingly casual slash in the direction of Xuan Xia and Xuan Ying!
"A divine craftsmanship, a masterpiece of magic!"

Boom!

A colossal phantom of a divine axe, seemingly existing since the beginning of time, appeared out of thin air! On the axe blade, the Great Acupoint Technique opened up the world, the Great Withering and Flourishing Technique interpreted life and death, and the Great Severing Technique tore apart eternity! Under the impetus of Li Chengqian's boundless power of the cave heaven, the runes of the three great paths perfectly merged, unleashing a terrifying artistic conception that ended everything and buried all things!
Ignoring spatial distance, the phantom of the divine axe struck first despite being behind, fiercely cleaving towards the purifying light pillar and the countless sword threads!

"Snap! Pfft—!"

The pillar of holy light, powerful enough to purify ordinary grottoes, was as fragile as glass before the phantom of the divine axe, instantly cleaved in two and shattered with a deafening roar! The thousands of holy light sword threads were also as if they had encountered their nemesis, breaking and annihilating one after another!
The sinister smiles on Xuan Xia and Xuan Ying's faces froze instantly, turning into extreme horror and disbelief!

"Impossible! What kind of divine power is this?!" Xuan Xia roared, desperately activating his inner world to try and resist.

However, the Divine Axe Technique is one of the supreme immortal techniques of the gods, and its power is extraordinary. The phantom of the divine axe continued its momentum, carrying the supreme power to create and end worlds, and fiercely slashed into Xuanxia's cave!

"No—!" Xuan Xia only had time to let out a desperate roar before his cave heaven, like an egg cleaved by a giant axe, groaned under the weight of the blow, instantly becoming covered in cracks before collapsing with a deafening roar! His physical body and primordial spirit were instantly shredded and annihilated by the terrifying axe intent!
The Xuan Ying beside him didn't even have time to scream before he was struck by the aftershocks of the divine axe. His protective magic treasure and his body were reduced to dust, and he was annihilated, body and soul gone!
One move! Just one move!
Two powerful experts from the Holy Light Great World, from the Longevity Secret Realm, perished completely with a single casual strike from Li Chengqian, without even a chance to resist!

The aftershocks of the battle were quickly swallowed up by the temporal tides, as if nothing had ever happened. Li Chengqian grabbed everything left behind by the two, including their magical treasure pouches, remaining vital energy, and their insights into cultivating in the Holy Light Great World.

At the very moment Xuanxia Xuanying died, Li Chengqian had a sudden inspiration, and his understanding of the laws of time reached its peak! The power of time around him fluctuated violently, and within his cave, the laws of time completely condensed and took shape, transforming into a miniature phantom of a long river of time that ran through the entire space!
The fourth level of Longevity, the Realm of Cosmic Light, is complete!

His aura surged dramatically, and his magical power, spirit, and physical body underwent another qualitative leap, bringing his control over time to a whole new level. At this moment, he was already able to begin to manipulate the flow of time in a small area around him. Although he could not yet truly reverse time, his advantage in battle was self-evident.

Fang Qingxue also awoke from her cultivation and sensed the vast, star-like aura emanating from Li Chengqian, imbued with the vicissitudes of time. Her clear, cold eyes gleamed with wonder: "Congratulations, cousin, on entering the Cosmic Light Realm!"

Li Chengqian suppressed his aura, smiled slightly, and his gaze seemed to pierce through layers of time and space tides, looking towards a certain direction that he sensed in the darkness and that resonated faintly with the barriers of the world.

"The true vault has appeared, and Hua Tiandu must have already been taken inside. Qingxue, it's time for us to collect our spoils."

(End of this chapter)