The word "4" means guessing.

[voice of b].

[Interpretation] Divination, divination, the ancients burned tortoise shells and looked at the cracks that were burned to speculate on good or bad luck in the future. You can know in advance without divination. Describe foresight.

[Source] Yuan Anonymous "Peach Blossom Woman marries Duke Zhou illegally": "Those who show off and kill Zhouyi Yin and Yang are like you; There is also a prophecy. "