What does the unknown mean in ancient Chinese?

"Unknown" means unpredictable, unpredictable. For example, life and death are uncertain.

Unknown: incarnation of b incarnation

No: (negative word): no; No, never; Put it at the end of the sentence to express doubt: do you know what it means?

Business unit:

1, divination, a superstitious behavior in ancient society.

2, expect, guess, know first.