After all, if Zhou Tian hadn't initially succeeded in threatening a True God, it's likely that his subsequent actions wouldn't have been so smooth. And previously, those True Gods learned to jointly pay the 'Reconciliation Fee', so now, seeing the response and results of the current Divine City, it's not surprising that they would choose to make the same response.
Thus, although at that time Zhou Tian seemed as if he could easily retreat, since the True God could not really fully block him, once Zhou Tian wanted to withdraw, he could have left in no time.
However, Zhou Tian could not just simply withdraw, because if he did, it would mean losing the hard-earned tactics he possessed.
