Who Said That Cultivating Immortals Must Go Against Nature?

Cultivation as an immortal seizes the creation of heaven and earth. If you succeed, you will transcend heaven and earth. If you fail, your soul will be destroyed... But who said that cultivating immortals must go against heaven and earth? Can't I give back to heaven and earth with all my immortality? Most elixir fairies* can absorb energy from outside the realm and convert it into spiritual energy to feed back to the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.