Not that much conclusive.
As I pointed out, substantial Taoist symbolism in the structure. Whether that was what Q was going for, or not, I am not sure. Q has a history of letting us simmer on our ideas until it's time to point to one that is right.
Others were pointing out the symbolism of the bulls.
Still others were trying to find other sculptures pertaining to other elements elsewhere in the world (with varying degrees of success - as I point out, the Chinese system of elements is a bit different from what we are used to thinking of in Western/Zoroastrian terms).