Moreover.
This was also an "art of causality."
Just like the Heavenly Fate Curse.
As long as the casting succeeded, it would inevitably create "reasonable cause and effect."
For example: the dead came back to life.
For example: a suspect appeared who was more suspicious than him, with irrefutable evidence against them.
Or, for example: everyone suddenly died from various accidents, the evidence disappeared, and the truth could no longer be found.
In short, it would use all sorts of means to make things reasonable.
But that reasonableness would inevitably give rise to more unknowns and uncertainties.
Someone who should have been living perfectly well suddenly died, because their being alive obstructed causality, so they had to die.
A road suddenly exploded, because if it did not, that person would not "suddenly die."
And other such "inevitably connected chains of subsequent cause and effect."
Thus, compared with the Heavenly Fate Curse, using "Reversal of Reality" involved more uncertainty about "future consequences."
It would also involve considerable instability.
And ultimately, fortune-telling was about turning "uncertainty" into "certainty."
This ability put the cart before the horse.
But right now, Xiao Yu was wholly focused on experimenting with, mastering, and understanding this new ability.
If he did not use it, try it, or experiment with it.
He would never know "why it was forbidden" or "what exactly the consequences would be."
Perhaps the consequences would have "an upper limit depending on what was changed," or perhaps they would have "no upper limit, with infinitely severe consequences."
Like the butterfly effect.
All of this required "trying it out."
Now.
What Xiao Yu wanted to change was the "marriage alliance" that had already been settled.
To be more precise.
She herself was unwilling to become a "sacrifice for a marriage alliance," but the family teachings