In this tug-of-war, the outside environment lost, allowing Zheng Yichen to breathe normally. Even without oxygen, he could maintain his bodily functions and didn't feel suffocated.
But he was certain that he was in a state where he could survive without oxygen. Breathing was purely a bodily function brought about by the Life Furnace.
He even felt the need to digest while breathing. Taking a deep breath could last him for a long time. Coughing was the result of him unable to fully 'digest' the inhaled air, requiring rapid expulsion.
"So what is this air? Chaos energy from a novel?" Zheng Yichen suppressed the discomfort in his body, not feeling any enhancement upon breathing, except that the Life Force generated with each breath was stronger.
But now, his physical state was already exhausted, and the Life Force generated from breathing couldn't immediately restore him.
