Kunyi He, of Totteridge Road, High Wycombe, is accused of being a key player in the running of 10 brothels in the South-east including addresses in Altwood Road in Maidenhead; Monarch Court in Langley and Copper Beeches Guesthouse in Bath Road, Knowl Hill, between 2008 and last year.
He has denied one count of conspiring to keep brothels.
Judge Peter Ross is due to start summing up on Monday at Reading Crown Court.
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The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.