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The wind passes leaving whisper, the geese pass leaving a trace.
In this vast world, any divine power that has appeared will leave its mark in the void.
Normally, these divine power marks are completely invisible, and only under extremely special circumstances can these marks be seen.
If your power is great enough, you can even find the traces of martial arts used by the strong in the void, and deduce the cultivation methods from these traces.
However, just as there are those who seek traces, there are also those who conceal them. The truly supreme top-tier martial arts, even if they existed in the void, would have been forcibly erased by the strong.
This is a process of mutual strategizing, and some powerhouses may even deliberately leave incorrect martial arts information there. If you learn it, you might plunge into an irredeemable abyss.
All of the above were not mentioned in the human race's legacy; these were the insights Chen Fei gained from Celestial Suppression.