The hard part had never been the method, but the experiment.
Even though the fireball had shattered, it still proved his method was right.
Since his method was right, Xu Yi had never feared putting in the painstaking work, drop by drop, until the stone wore away.
Another ten-odd days passed in a flash. Whenever Xu Yi became obsessed with something, he would throw himself into it with ruthless determination, determined to master it inside and out.
The Immortal Slaying Sword's Sword Light flashed. The Thirteen Swords of Clear Wind had remained aloft for three breaths, sweeping out thirteen clusters of Sword Light. The next instant, the thirteen clusters converged and shot straight toward Xu Yi, high above the ninth heaven.
This was the limit of the sword technique Xu Yi could unleash with the Immortal Slaying Sword. He usually didn't use it because it was practically useless in battle. After all, no enemy would be foolish enough to stand still and give him three breaths to assemble a sword formation.
Although he couldn't use the combined sword formation in battle, once assembled, its power even surpassed the Silver Winged Saber.
So Xu Yi hadn't dared test the move on Peach Blossom Mountain. Instead, he had come high into the ninth heaven.
The terrifying Sword Light eventually gathered into a fearsome storm cloud. The moment it surged into the sky, the clouds across a hundred-mile radius scattered.
Xu Yi stood firm as the gale pulled his waterfall of ink-black hair and fluttering robes straight behind him. He waved his hand, sending a ball of deep-blue flame shooting out.
Almost instantly, the deep-blue flame expanded into an enormous, boundless net, completely enveloping the Sword Light storm.
"Collect!"
Xu Yi roared in a low voice. The net snapped shut, and the berserk