Xiantian Realm

After a cultivator stepped into the realm of Xiantian, his innate Spirit Seed would be nourished by innate energy, exactly like how a seed was nourished by rainwater. Then, it would slowly grow and sprout, and eventually develop into the Spirit Root for cultivating Dao. As the cultivation kept progressing, the innate Spirit Root would grow further and become stronger. Gradually it would expand its root from its initial breeding ground and stretch into all other viscera, transforming the innate elemental affinity of the cultivator and turning the body into a specific constitution of a cultivator.