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the moon is dimmed; darkness, the word used especially by Triad Society ( a secret society during the Ching Dynasty dedicated to the overthrow of the Manchus and the restoration the Manchus and the restoration of the Ming Dynasty, the character means the same as 月
【辰集上】【月字部】㬴 ·康熙筆画：10 ·部外筆画：6
《集韻》虎孔切，音嗊。㬴㬴，月不明也。