"I'll use you to gauge my current rough strength."
A smirk appeared on Xu Gu's lips as he spoke with casual ease.
His strength had improved rather quickly, so much so that even now, he still had no idea what his own limits were.
Is it at the level of a High Star Upper King?
Or the level of an Extreme Upper King?
Or perhaps the level of an Extreme King?
Xu Gu genuinely did not know.
As he thought this, Xu Gu's figure suddenly flickered; the Battle Instrument in his hands struck down like a Thunderbolt.
The blade's light seemed to shred heaven and earth, countless Dao flickering as if in fright.
At this moment,
The Planet Eater, an unbeatable opponent for ordinary Upper Kings, seemed to Xu Gu not to be much of a challenge.
"Roar!"
