Humans begin their cultivation journey from the mortal realm, refining their flesh and blood, honing their bones and sinews, tempering their skin.,Internal training cultivates the five internal organs and six fu, while external training refines the skin, flesh, tendons, and bones.,But he wasn't in a hurry now, first because he was currently inside Zhenwushengzong. His father was very concerned about his cultivation, and he didn't want others to discover his abnormality.。