There's no doubt, merely the success of this one action represents enough significance for Zhou Tian to validate his decision. And based on the gains from this action, Zhou Tian can support his cultivation for quite a long time, and simultaneously use these gains to further expand his team.
This action was just minor skirmishes because due to being inferior to the opponent in strength, besides the gains from catching the opponent unprepared earlier, after that True God appeared, both Zhou Tian and his Heavenly Gods were able to withdraw safely, but subsequently, there was no actual gain.
Zhou Tian believes, based on his current development speed, that sooner or later his team will expand to the point where it can confront a Divine City. And once that team truly develops to that point, then Zhou Tian might genuinely attempt to raid one Divine City after another.
