Zhang Yu watched the two flying swords descend toward him. The Heartlight Seal around him spread outward, and the instant the two flying swords touched it, they seemed to melt, plunging into it in a flash and swiftly merging as one.
When his Heartlight Seal drew back in, the two swords seemed to have vanished entirely. In truth, he had concealed them within the Heartlight Seal.
Ordinarily, for sword implements to merge into the Heartlight Seal, one had to refine and unite the twin swords. This was a gradual, water-wearing-through-stone endeavor. He had been attempting and refining it all along, and battling enemies was likewise a form of tempering. Yet it had seemed to lack that final measure of heat, so it had never been completed.
But he had never expected that, while originally intending to seek out his various selves this time, he would accomplish it by accident.
This was likely because the two swords had long been steeped in his spiritual aura. Moreover, they had been born because of him and refined by him; they could already be counted as part of himself. In a sense, they were also among his "various selves," and thus had been smoothly refined together when he activated his method of perception.
With a thought, the flying swords appeared in his hands once more. Having reached this stage, he could hold the sword implements in hand or put them away at any time, wielding them in flight and slashing with them as freely as he pleased.
The next step would be the art of multiplying flying swords. Only by merging the Heartlight Seal with the sword implements could one proceed to achieve such a thing.
He considered it carefully. On the surface, this seemed like an unexpected gain, yet it was no coincidence.