In the circumstances at that time, if Zhou Tian were still alive, given the character of that Divine King, he wouldn't mind shielding Zhou Tian. In fact, if he were more determined, he might even fight other Divine Kings for Zhou Tian, which was not impossible.
However, the precondition for that Divine King to help Zhou Tian was that Zhou Tian must be alive. After all, he owed a personal favor to Zhou Tian, not to the forces Zhou Tian established. So the Divine King would take action to help Zhou Tian, but if Zhou Tian was already dead, even if the Divine City Zhou Tian built was his heart and soul, that Divine King couldn't take care of it for him anymore.
