All things move according to cause and effect. The centuries-old medicinal properties of a medicinal plant are the "fruit" of its absorption of the aura of heaven and earth; a person's illness is the "fruit" of his past habits; the depth of a relationship is the "fruit" of mutual devotion. Ye Chen came back from rebirth and was bound to the [Record of Cause and Effect Alchemy], which essentially allowed him to see cause and effect, resolve cause and effect, and use cause and effect to enter the path of elixir.