The Sword Embryo cradled in the little Primordial Spirit's arms guarded Jiang Yun's forehead, casting a sheet of divine light. Tempered by the Primordial Spirit Fire, it blazed ever brighter.
Clang! Clang! Clang!
From what Jiang Yun had learned in the scripture, tempering the Primordial Spirit Sword Embryo with the power of others' Primordial Spirits could forge a sword embryo of supreme strength, one that nothing could break.
Even without taking shape, its mere aura could greatly suppress an enemy's divine sense.
Cultivated to its highest realm, the sword embryo would only have to appear to suppress the Primordial Spirits of cultivators at the same level.
But that required a vast number of cultivators' Primordial Spirits. It was all but impossible.
Leaving aside how many people one would have to kill, even in the Immortal Ancient Era, when killing might have been easy, extracting a cultivator's Primordial Spirit to refine a sword was extremely difficult.
Most cultivators primarily cultivated their Primordial Spirits. Even with an entire major realm's advantage, capturing one alive was impossible; they could self-destruct at any moment, making the losses too great.
Getting everyone to offer up a wisp of their Primordial Spirit to temper his Sword Embryo, as Jiang Yun had done, was even more impossible.
Absolutely impossible. Not even an ancestor of his own family whose word carried the weight of nine tripods could manage it.
Only Jiang Yun had created this miracle. Inspired by the Undying Heavenly Emperor's stone chessboard, he had combined it with the Source World to create the Emperor's Tower.
Some people even contributed ten wisps of their Primordial Spirit in a single day. Jiang Yun was afraid they might keel over.
Countless cultivators pressed forward, paying to hand over their Primordial Spirits, buying pills at their own expense to recover,