If there were enough disciples supplying spiritual energy, breaking through to the Spirit Severing stage in one go would not be entirely impossible. But if that were truly the case, wouldn't the Evil Sect have long since become the number one sect within a million miles?
Therefore, Xuan Xiao naturally concluded that this combined attack formation must have a fatal flaw. A time limit was the first thing that came to his mind.
Although this was a flaw, it was of little consequence; if it could truly elevate a person's cultivation to such heights, a short duration did not matter at all.
Chapter 1409