At the beginning, Zhou Tian did not lay hands on those Medium Worlds; his purpose was to test the Divine Realm Consciousness's Response. If the Divine Realm Consciousness kept reacting with uncompromising toughness, then, should there be any Opportunity, Zhou Tian would Fight it; but if there truly was no Opportunity at all, Zhou Tian would not mind taking a step back at that time.
Obviously, judging from the Divine Realm Consciousness's Response at that time, the situation was clearly very favorable to Zhou Tian. If no Accident occurred, it was evident that the Divine Realm Consciousness had already given up on those Small Worlds. With him possessing sufficient Ability, and given how the Divine Realm Consciousness performed back then, even if Zhou Tian wanted to Annex all those Small Worlds in one fell swoop, it did not seem to be an impossible matter.
With such an Opportunity, Zhou Tian naturally had no reason to be courteous toward the Divine Realm Consciousness.
