Preparing to flee, Zhou Tian was hit hard by Pan Shi's trap. Based solely on the situation at that time, it was quite certain that Zhou Tian suffered a significant disadvantage at the hands of Pan Shi. Moreover, after what had just happened, Zhou Tian's chances of escaping easily had become very slim.
However, even though he took a hit in Pan Shi's trap, Zhou Tian wasn't really affected that much.
Had it been any other living beings in Zhou Tian's position at that time, they wouldn't even think about fleeing or overcoming Pan Shi. Most likely, they would have been seriously injured, if not dead, in that explosion. Even if they were evenly matched with Pan Shi originally, that trap could have easily defeated his opponents.
But because Zhou Tian had an immortal body, even the great power of Pan Shi's trap couldn't easily bring him down.