The Dragon Emperor was taken down by Zhou Heng, mainly because he underestimated Zhou Heng.
Knowing one's enemy and oneself is the way to prevail in every battle! He had no idea how terrifying the destructive power could be when the Black Sword was combined with the Sky-soaring Nine Forms and Five Elements Rune. Otherwise, he would never have given Zhou Heng the chance to get close!
On the other hand, it also had to do with the Dragon Emperor's coming down this time.
Crossing the Realm Gate demands a terrifying price; he had to pawn all the Treasure Artifacts he had, almost coming down stark naked, losing all his Treasure Artifacts!
If he had even one defensive Treasure Artifact, it could have at least blocked Zhou Heng for a moment, preventing him from being completely wiped out. After all, he was at least a Star King!
But there's no medicine for regret!
