Fig.#1. Duality, from the fabric-of-creation's point of view, is the first of the effects (which come in the form of a Continuum) that are caused by the seed of creation's manifestation of Existence, itself. The two, specific laws that form this first great duality state:

The creation of the One is, in and of itself, the implication of the creation of the Other.
That which exists within the Chi shall be Dual in its nature, but Triune in its effects.