Cultivation in the Oxygen-Rich Age

The oxygen content increased sharply, a large amount of biological oxygen was poisoned, and fire and explosion accidents occurred frequently. At this moment of life and death around the world, China discovered that breathing and breathing method can use oxygen to nourish itself, and promoted it to the world. Human beings around the world urgently began to learn the breathing and breathing method. At the same time, animals also began to change due to the sharp increase in oxygen content. The protagonist, Gao Xiang, seizes the opportunity to cultivate immortality and peek into a corner of the ancient heaven. : I came from the human world, bringing a world-beating sword!