Jiang Chen is not originally from the Divine Abyss continent, nor has he experienced the great wars between ancient races, so his understanding of the Boundary Stele is limited.
However, he has heard others discuss the Boundary Stele more than once. For example, Emperor Peerless, and the Great Emperors of Veluriyam Capital.
He knows that the Boundary Stele isolates the various races of the Divine Abyss continent from each other. During the ancient era of sealing demons, the Boundary Stele was essentially to prevent demons from one territory from crossing into another.
But, Jiang Chen suspects that the Boundary Stele might also involve mutual mistrust and precaution among the different races.
In the human or foreign races' domain, even the strongest forces in the Upper Eighth Region, those top Martial Artists, all adhere to an iron law, which is not to recklessly trespass into the Boundary Stele.
One must not destroy the Boundary Stele.