Yin & Yang
The interwoven Chinese ☯ Yin & Yang symbols stand for the duality of 陰 yīn “shadow” & 陽 yáng “light”. Since these words also mean “hidden” & “open”, you could imagine those are also a duality for the rulers. Instead, the Chinese elites probably promoted these symbols for their punny duality of 陰 yīn “secrecy” & 佯 yáng “pretense”. Because rulers are never truly “open”!
I cannot say it often enough, because even most truth-seekers don’t understand it: Openness or honesty has never been an option for any aristocracy! As soon as power is inherited, it can only & ever be sustained through secrecy & deception. There is simply no way how randomly born aristocratic offspring — with an average skillset, zero real-world experience, and lazy through privilege — could provide any truthful argument why they would be the fittest to rule. So to sustain aristocratic rule, there’s no “shadow & light”, but only different kinds of “shadow”: keeping the truth completely secret, and putting on a public show of false things. The second one evolved into spookery!
Note: Chinese puns are not always perfect in the pronunciation, but this one is. 陰 yīn for “shadow” is the very same word as for “secrecy”. And 陽 yáng for “light” is pronounced exactly as 佯 yáng for “pretense”.