- tenth heavenly stemThe last of the ten heavenly stems; the tenth in an ordered list, equivalent to "J" or "X" in Western systems. Also an ancient compass point of 15 degrees
- 10th earthly branchThe tenth of the twelve earthly branches; used in ancient timekeeping to represent the period from 5 p.m. to 7 p.m., the year of the Rooster, or the direction west.