Everything in the world can cultivate immortality. The process of cultivating immortality is divided into five major stages, which are: Qi refining stage, Yuan Yuan stage, God refining stage, Void return stage, and Dao integration stage. That is to say, the process of refining Qi into essence, refining essence into essence, refining essence into spirit, refining spirit into emptiness, refining emptiness and combining it with Tao. By combining Tao, one can live forever and become an immortal.