Teacher, I... am actually the Ancient Sage!
What was the power of rules?
It was the universal truth by which this world operated. Everything in this world possessed the power of rules; it was just that ordinary people could not perceive that power. They could only see its outward manifestations...
To put it more plainly, much of what people considered common sense in daily life was caused by rules.
People were used to things falling downward, water evaporating, fire giving off heat...
These rules varied in size and kind, far too many to list.
But all these things had one thing in common: they were taken for granted by people, and had existed since time immemorial.
So after Li Weide used the power of rules to put his soul's outer garment back on, that fake Death God absolutely could not detect anything unusual about him.
Even if that madman came in person, it would be very hard to see through it unless he observed carefully.
Because Li Weide was using the inconspicuous power of rules as his disguise.
Without knowing that Li Weide had already fully grasped the correct way to use Ancient Magic, it would be very difficult for them to tell.
By the same logic, the current Li Weide could finally use the power of Ancient Magic to make his own arrangements without fearing that he would be seen through.
This was also why Li Weide said that he finally had a sliver of hope now... a sliver of hope to resist...
Perhaps the Li Weide who had given Li Weide the system had also reached this level in the later stages, but in the end, he had noticed it a little too late.
And there was only one explanation for why the fake Death God had chosen