The Strongest Fiend.

Summary

A massive black hole forms in the sea, creating a supernatural phenomenon that shocks Zhao Zi Qi and Xu Yang Yi. They discover a triangular sea cave filled with wreckage of planes and ships, indicating a long history. In the center lies a gigantic sword-shaped floating fortress, a product of Earth, engraved with glowing runes. Inside, they find advanced technology alongside remnants of powerful cultivation. Xu Yang Yi activates the fortress, awakening a mechanical entity that begins calibrating navigation routes, hinting at a deeper connection to the Kaiyun Realm and the Old Ancestor of Floating Clouds. The situation suggests a significant mystery surrounding the fortress's fall and its implications for their journey.

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