In Chinese philosophy, squares represent spaces on the Earth while circles are used to represent heaven.
The octagon is the perfect balance in between.
It is the easiest circle to create with 8 equal straight lines.
Cardinal directions are given as eight choices.
Models of one or trwo thing are challenging for decision making and models of two three or four give us more options.
Models of 16, 32 or 64 are also helpful though typically harder to understand and take more time.
A model of 8 gives choices quickly and with some detail.
Enter the octagon and see which area you need to look at.