Uncertain four-word words

Pinyin: b ? xi ā n zh and

Interpretation: Divination, divination, the ancients used the tortoise shell to burn and see the cracks that were burned to speculate on the good or bad luck in the future. You can know in advance without divination. Describe foresight.

Source: Yuan Anonymous's "Peach Blossom Girl" is the third fold: "It is unpredictable to show the yin and yang of Zhouyi."