What does one yin and one yang represent?

1: face down and face up, that is, one yin and one yang (for a living), which means you can, agree and do things smoothly!

2. Two planes are facing up and the convex surface is facing down, that is, two yangs, called Yang hexagrams, indicating that the gods are undecided and it is difficult to do things, so be careful.

3. Two planes are facing down and the convex surface is facing up, which means that you can't, the gods can't bless you and the success rate is low. If you persist in doing it, you may be ill-fated and tortuous.

4: Two sharp corners stand up as shields for divination, which means that you must not do it, and there may be a disaster!