At the time, Zhou Tian, although within the territory of his opponent, wielded the Demonic Slaying Weapon from start to finish without causing significant impact on the opponent's world. Even when his attacks were dodged by that elite fighter, the structure of their world and their vanishing and reappearing performance remained largely unaffected.
Undoubtedly, from the situation at that time, the abilities of the Demonic Slaying Weapon in Zhou Tian's hands had not disappeared. However, its disruptive effect on that elite fighter had almost vanished. At least when facing the disruption from his weapon, the elite fighter was still able to exert their full strength.