Book 'Astrology and Cosmology in Early China: Conforming Earth to Heaven' by David Pankenier
https://www.academia.edu/2629001/Astrology_and_Cosmology_in_Early_China_Conforming_Earth_to_Heaven
With interesting insights on hexagram 1 and other hexagrams as well.
I have attached Major's article so that the quote can be read in its entire context.
Myth, Cosmology, and the Origins of Chinese Science - Major.pdf
