What's the use of Taiji gossip besides fortune telling?

Fortune-telling is just the "last resort" in Taiji gossip.

Taiji's black and white Pisces is a philosophy of life, and "whether it is extremely Thai" is an explanation. You see, the place with the most black is the place where white was born. Black is not completely black, but also white.

Taiji diagram visualizes this philosophy of existence and nonexistence.

I suggest you read the Tao Te Ching, and then read it again, maybe you will have a new understanding.