Being injured was only to be expected; Zhou Tian's strength was far inferior to those NPC demigods. Managing to survive their attacks was commendable enough; Zhou Tian never thought he could entirely fend off the NPC demigods' strikes without a scratch.
Thus, even though Zhou Tian was on the defensive and taking hits from start to finish, he felt remarkably calm given the circumstances. He knew that if the combat situation continued like this, there would be no problem in persisting until he could upgrade.
However, it was clear that Zhou Tian could sense something those NPC demigods could as well. Zhou Tian knew that if he kept fighting in that manner, he could buy enough time. But didn't those NPC demigods realize this? Generally speaking, there seemed to be no reason for the NPC demigods to give Zhou Tian such an opportunity.