In the Introduction to the main text of the book The Way of Heaven, it is stated that,
"Numbers play a significant role, and the best way of understanding that role is through the mathematical notation of a series."
What finer example of a numerical series than the players' and fans grouping into a coherent community, a wholeness.
The second set (5, 6, 7, 8) of the Way of 12 exemplifies this idea:
" 5 is no longer a flux; like 3 it is an organizer...
...It presides over mutations, with reference to a gathering and distributing center where living beings are constructed.
" 6 is the modulation of the vital flux, the number of currents that maintain life...
...It is the number of the modalities of exchange between Heaven and Earth, forming space-time in which the living are located and supported. 6 combines the alternation of 2 and the harmonized flux of 3. Heaven Earth is the field of the 6 junctions of the qi.
" 7 springs up, the emerging of an essential, secret inspiration.
" 8 spreads the qi, revealing and externalizing 7. "
And so it is.