In the 3™ century B.C., a Wealthy Chinese businessman and patron called Lü Buwei commissioned from savants an encyclopedia of the knowledge of his time: Spring And Autumn of Lü Buwei.

In this oldest extant Chinese work, which contains a music theory strongly pervaded by number-harmonic elements, it reads: "The origins of music go a long way back. Music emerges from measure and is rooted in the great One. The great One generates the two poles (1/n1/1n/1); the two poles generate the power of darkness and light. The power of the dark and the light changes; one rises up high, the other sinks down low; they unite and form bodies, surging and undulating. If they are separated, they unite again; if they are united, they separate again. That is the eternal progression of the heavens. Heaven and earth are held in a cycle... the origin of all beings is the great One; they build and perfect themselves through the duality of darkness and light. As soon as the seeds begin to sprout, they develop into a form. The bodily form is within the world of space, and all spatial things have a sound. Harmony emerges from their concord. Harmony and concord are the roots from which the music appeared which was written down by the ancient kings. When the world is at peace, when all things are at rest, all following their superiors in their changes, then music will perfect itself. Perfect music has its effects. When desires and passions do not follow false paths, then music is perfected. Perfect music has its origins. It emerges from equilibrium. Equilibrium emerges from the right, the right emerges from the meaning of the universe (Tao). Thus one can only talk about music with someone who has known the meaning of the universe."

https://youtu.be/Wk4sIkcXfY0

Like so.

https://youtu.be/CwMMwAWAFds