Chen Yan, the son of the tomb keeper, accidentally came across a chalcedony bead while guarding his father's tomb. He discovered that the bead could absorb the spiritual energy of heaven and earth to temper the physical body and accelerate recovery from trauma. Originally an ordinary man in the mountains, he used the Pearl Body Tempering Technique to start from the first level of Body Tempering, and step by step he resisted the bullying of the village bully, the oppression of the powerful in the town, the conspiracy of the family trial, and even went head-to-head with the genius of the high family and the powerful master of the fake realm. From the tomb-guarding hut to the Nine Realm Martial Arts Platform, from the mortal body to the top of the Void-Breaking Realm, Chen Yan used the solid accumulation of "mortal flow" and the stupidest method of "tempering bones a thousand times" to finally split the boundary wall, prove the Tao with martial arts, break the iron law of "no one can become a saint without great opportunity" in the world of high martial arts, and achieve the legend of "tempering the body to become a saint".