Tong Lie and the grandmaster guard were both somewhat curious. There was actually such a miraculous treasure, whose mysteries could not be glimpsed unless one's cultivation had reached a certain height?
But this was spoken by the Palace Lord of the Underground Palace, so it presumably could not be false.
Tong Lie in particular had possessed this Dao Mark Stone for quite some time. Naturally, he had explored its secrets in every possible way, yet had always gained nothing. Looking at it now, it should have been because his realm was insufficient; he had yet to cultivate the Heavenly Being Path and use his Primordial Spirit to plumb its mysteries.
At this point, both of them understood that this Dao Mark Stone was truly useless to martial artists below the Heavenly Being realm, no different from trash. Yet for powerful experts who had cultivated into Heavenly Beings, it was the finest provision for increasing cultivation, tempering the Primordial Spirit, and comprehending the Heavenly Dao.
To give an example, if cultivation in the Heavenly Being realm was a journey, then a martial artist comprehending the Heavenly Dao on their own was like traveling through it on foot. But with a Dao Mark Stone, it was like getting into a car, one's progress soaring wildly.
Cultivation that originally required a hundred years might be completed in merely a few short years with an abundant supply of Dao Mark Stones to comprehend.
Thus, for Supreme Heavenly Being experts like the Palace Lord of the Underground Palace and the Heavenly Demon Palace Lord, this Dao Mark Stone was truly a priceless treasure.
Since the Heavenly Demon Palace Lord was using this Dao Mark Stone to lure the Demon Master's Successor into meeting him, did that mean he possessed an important clue concerning this treasure