Da Yun was a failed writer in his previous life. After his soul transmigrates to the dawn of chaos, he turns out to be the incarnation of a single strand of hair shed by Pangu after his death, and becomes the nominal fourth brother of the Three Pure Ones. With such humble origins, he dozes in a corner while Hongjun lectures on the Dao, earning the Three Pure Ones' disdain. While everyone else fights over spiritual treasures and orthodox lineages, all he wants is to coast through the chaos of the prehistoric world. But the Heavenly Dao seems to favor this lazybones, showering him with opportunities: a stone he picks up turns out to be the Primordial Chaos Core, and even the breath he blows out in a yawn can create a blessed paradise. During the great war between the dragons and phoenixes, he happily roasts a phoenix on the edge of the battlefield