It's obvious that although theoretically Zhou Tian could win as long as he engaged in a war of attrition with those Divine Kings, there was no necessity for him to do so from any perspective.
Engaging in a war of attrition with those Divine Kings was not a good idea, as Zhou Tian was still in the Divine Realm at that moment. The longer he stayed in the Divine Realm, the more severely he would be oppressed by the Divine Realm's consciousness. Although it wasn't visible at the moment, if Zhou Tian stayed in the Divine Realm beyond a certain point, no matter how strong his power was, he would likely be expelled.
Although Zhou Tian hadn't considered taking the opportunity to annex the Divine Realm, if there was hope, he still hoped to gain some benefits within the Divine Realm.
At the very least, if possible, Zhou Tian hoped to kill more Divine Kings and loot some items to bring back. Given his plan at the time, he was naturally unwilling to waste too much time on those Divine Kings.
