Du Yu stood to one side and read the entire "Cause-and-Effect Reversal Formula." He discovered that his earlier guesses had been somewhat off the mark.
As written by "Guiguzi," the Cause-and-Effect Reversal Formula worked differently from how it did now.
Guiguzi's formula made it clear that this ability could only alter a brief stretch of history preceding the caster's use of it. It had no other effects.
In theory, a temporal art that could only alter a single "thread" did not sound all that powerful.
The situation they now faced had arisen from several exquisitely timed coincidences.
The first coincidence was that the Shiranui Household seemed to have produced an uncanny genius. Not only had he understood and thoroughly mastered this formula, but he had also used it as a basis to develop the "Thread-Cutting art."
Since "time" could repair "time," the other members of the Shiranui Household kept cutting "threads," throwing "time" into disarray.
This effectively magnified the power of the person in the cave without limit, while also magnifying the power of the Shiranui Household's members without limit.
There was only one prerequisite for all this... "time" had to exist inside the cave when the Shiranui Household performed the "Thread-Cutting art."
The second coincidence was that the "person being saved" became the "person in the cave," forming a terrifying closed loop. This caused the bizarre phenomenon of "replacing oneself with oneself" to occur over and over.
The third coincidence was that Zhan Qisheng's "travel spell" was insufficiently stable, making it easy for numerous "Du Yus" to keep falling into the Time Cave, where they spoke with their past "selves" and triggered enormous chain reactions.
Once he understood all this, Du Yu gave Guiguzi a meaningful look, then fixed his gaze on Xu Fu and skimmed through the broad