Who invented the yin and yang symbol?

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Tags

1. #remains
2. #least
3. #chinese
4. #origins
5. #practices
6. #bones
7. #earliest
8. #century
9. #early
10. #skeletal
11. #inscriptions
12. #characters
13. #ancient
14. #divination
15. #oracle
16. #found
17. #animals
18. #terms
19. #various