All things are Law.
Primordial Transformation.
This was an understanding of the Supreme Dao at the most fundamental level.
Previously, genius at the True Xuan Level, after comprehending Xuan Restriction, when faced with a genius at the True Spirit Level, that combat power would be akin to crushing dry weeds and smashing rotten wood—annihilating the opponent in seconds.
The reason why geniuses of the True Xuan Level could regard those of the True Spirit Level as insignificant was largely because their understanding of the Dao approached the 'Origin'. But it was still just approaching.
Now, Zhou Yan had directly obtained an understanding that surpassed Xuan Restrictions, which was equivalent to obtaining a real superweapon.
And with a 'superweapon', even a child, once it was activated, could instantly kill a truly strong man.
Not to mention Zhou Yan himself was an extremely terrifying genius. Holding the top 'Cultivation to Dao', he would present a frightening potential.