“Zhu Xi maintained that all things are brought into being by the union of two universal aspects of reality: qi, sometimes translated as vital (or physical, material) force; and li, sometimes translated as rational principle (or law).” —Wikipedia

 

“Drop off the key, Lee” — Paul Simon
The 3x3 Grid
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According to Chu Hsi [Zhu Xi],

The word 'Li'
“Li” is “the principle or coherence or order or pattern underlying the cosmos.”

– Smith, Bol, Adler, and Wyatt, Sung Dynasty Uses of the I Ching,
Princeton University Press, 1990

Related material:

Dynasty and

Lesson Number One.