(literary) Used to describe people or things that are completely separated, incompatible, or in direct opposition to one another; based on the fact that the stars 参 shēn and 辰 chén are never in the sky at the same time, and the hours 卯 mǎo (5-7 AM) and 酉 yǒu (5-7 PM) are on opposite sides of the day

(literary) The facts of a matter; the rights and wrongs of a situation