Zhou Tian had no evidence to support his thoughts, but he believed in his intuition at that time. Thus, he quickly took action based on his thoughts then.
Unless faced with a life-threatening situation, he would never allow those demigods to destroy the Ancient Ruins Space, even if it meant getting injured. Because if the injury merely increased the risk of combat at that time, the destruction of Ancient Ruins Space would certainly mean Zhou Tian's defeat.
With no chance of confronting so many demigods, what would Zhou Tian have left if even the slightest chance of victory was extinguished by his opponents?
Therefore, having been pushed to this point by those monsters, Zhou Tian was very clear in his mind. Even if he was driven to the Relic Continent by the demigods, he had no choice but to face it head-on. Even if he was severely injured by the opponents, that was still better than losing this last bit of hope.