回事

回事	huí shì	(old) to report to one's master
回	huí	to circle / to go back / to turn around / to answer / to return / to revolve / Hui ethnic group (Chinese Muslims) / time / classifier for acts of a play / section or chapter (of a classic book)
回	huí	to curve / to return / to revolve
回	huí	variant of 回
事	shì	matter / thing / item / work / affair / CL:件,桩,回