Cause, connection, and effect are essentials that must be heeded in cultivation.
This differs from the commonly uttered "Good begets good, evil begets evil."
What is good? What is evil? Besides some clear definitions, the perception of good and evil is hard to distinctly conclude, leaning closer to a dualistic debate.
But the world isn't formed of rights and wrongs but of cycles, and the triad of cause, connection, and effect is the logic of a cycle.
If one were to speak in the fashionable modern discourse, the Butterfly Effect is a classic theory of cause, connection, and effect—the "cause" of a butterfly's wings stirring the air, the "connection" of this cause driving the addition of other elements like the climate, and ultimately the "effect" of a storm forming.
Shen Yue temporarily set aside the internal grievances of the Song Clan, gazing at the Yinyuan Stone, pondering the profound mysteries implied by "cause" and "connection."