Was Zhou Tian afraid of those demigods?
If he truly feared the combined strength of the demigods, then Zhou Tian wouldn't have stayed in place at that moment; instead, he should have been flanking them from behind. Since Zhou Tian wasn't influenced by their alliance, it also represented his full confidence in his own combat power. He was confident that, with their abilities, it was utterly impossible for them to pose a threat to him.
However, since Zhou Tian hadn't initially considered engaging in a hard fight with the demigods, he naturally wouldn't easily give up on his original plan at that moment.