The attack that Heaven and Earth had launched was unavoidable. The rulers were the entire world, so they could easily fill it with their power. Nothing inside the sky was safe from their offensive.
Noah knew that far too well. He had been aware of that issue for way too long, but seeing it with his own eyes gave birth to unexpected emotions. He could feel his instincts screaming in fear and his very mind begging him to hide.
Still, that was only an instinctive reaction caused by highly heightened senses. The aware side of Noah's mind knew that running away wasn't exactly possible when the entire world had stepped into the battlefield.
Moreover, Noah had reached the solid stage. That was his peak, the utter apex of the cultivation journey. He couldn't get stronger than that, so he only had one path left to tread. He could only go forward.