Please step into the trap. (idiom: taste your own medicine)
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history
君 originally meant 'ruler' in ancient China. Over time it evolved to be a respectful form of address, similar to 'you' or 'sir' in classical Chinese poetry and prose.
usage
In modern Chinese, 君 mostly appears in set phrases (君子), classical quotes, and formal/literary writing. In Japanese (kun), it is still used as a common honorific suffix.
