Reverse the Universe, Primordial World Reborn

Chen Siyu and Chen Ruixuan focused all their attention, continuously pouring Chaos Power into the runes on the dark magic array. Under the impact of the Chaos Power, the runes flickered unstably, and the originally stable dark magic array began to fluctuate abnormally. Seeing this, the black-robed man's expression changed drastically. He roared hoarsely, "You fools! How dare you ruin my plan? I won't let you go!"

The black-robed man struggled desperately, trying to break free from the Five-Colored Ribbon's restraint and stop Chen Siyu and Chen Ruixuan from destroying the array. The warriors of the Lingxi Tribe immediately surrounded him, attacking him with various spells and weapons, preventing him from distracting the siblings. For a moment, the underground space was filled with crisscrossing spell lights and shouts of battle.

As the Chaos Power continued to be injected, fine cracks appeared on the runes. These cracks spread rapidly like a spiderweb, and the entire dark magic array began to tremble violently. The black-robed man watched the array in horror, his eyes filled with despair and unwillingness. He knew that once the array was destroyed, his years of planning would be in vain.

Suddenly, the black-robed man unleashed a powerful force from nowhere, breaking free from the Five-Colored Ribbon's restraint. He charged madly towards Chen Siyu and Chen Ruixuan, his black Long Sword flashing with an eerie light, attempting to kill the siblings before the array was destroyed.

"Be careful!" the warriors of the Lingxi Tribe shouted in unison. Chen Siyu quickly turned, using the Five-Colored Ribbon to block the black-robed man's attack. However, the black-robed man had gathered all his strength into this strike, and the Five-Colored Ribbon began to crack under the immense force.

Seeing his sister in danger, Chen Ruixuan was extremely anxious. Without hesitation, he stepped in front of Chen Siyu and took out the bead containing immense power again. This bead had played a crucial role in their previous adventures multiple times. At this moment, Chen Ruixuan poured all his spiritual energy into it. The bead glowed brilliantly, releasing a dazzling light like an indestructible shield, blocking the black-robed man's attack.

The black-robed man's attack was blocked, and he roared in anger, raising his Long Sword again to launch another attack. Just then, the runes on the dark magic array finally couldn't withstand the impact of the Chaos Power. With a "boom," the runes shattered completely. The entire dark magic array instantly lost its light, and the dark mist that had permeated the underground space quickly dissipated.

Feeling the array being destroyed, the black-robed man staggered as if struck by lightning, nearly falling to the ground. His eyes were filled with despair and madness. Looking at Chen Siyu and Chen Ruixuan, he gritted his teeth and said, "You... you ruined my great plan! Even if I die, I'll take you with me!"

With that, the black-robed man, disregarding his own safety, lunged towards Chen Siyu and Chen Ruixuan again. However, his power had been greatly diminished after the destruction of the array. The warriors of the Lingxi Tribe swarmed forward, surrounding the black-robed man. After a fierce battle, the black-robed man was finally subdued, collapsing on the ground, unable to resist.

As the dark magic array was destroyed, the entire castle began to shake violently, as if it were about to collapse. Chen Siyu shouted, "Everyone, hurry! This place is going to collapse!" Led by Chen Siyu, they quickly ran upwards along the spiral staircase.

When they finally escaped the castle, it collapsed with a roar, kicking up dust everywhere. The reconnaissance team members looked at the ruins before them, a sense of relief washing over them for surviving.

After this battle, the mysterious people's conspiracy was completely thwarted, and the Primordial World returned to peace once more. To thank Chen Siyu and Chen Ruixuan, the Lingxi Tribe held a grand celebration ceremony. During the ceremony, the Elder of the Lingxi Tribe presented the siblings with a badge symbolizing friendship and honor, and declared that the Lingxi Tribe would forever be their allies.

Chen Siyu and Chen Ruixuan looked at the badge in their hands, their hearts filled with emotion. They knew that this adventure was only a part of their journey in the Primordial World. The Primordial World was vast and boundless, with countless unknown mysteries waiting for them to explore and more challenges awaiting them.

After the celebration ceremony, Chen Siyu and Chen Ruixuan bid farewell to the Lingxi Tribe and embarked on a new journey. Their figures gradually disappeared into the afterglow of the sunset, and their legendary story would continue to be told in the Primordial World, inspiring more Cultivators to bravely pursue justice and truth... In the future, what thrilling adventures would they embark on in which corner of the Primordial World? Everything was uncertain, but one thing was for sure: no matter what difficulties they encountered, Chen Siyu and Chen Ruixuan would forge ahead with their wisdom, courage, and indomitable spirit, writing their own glorious chapter.