NATLANG: Chinese for "chestnuts"

Some L1 English speakers use the word "chestnut" to refer to a little gem of
wisdom.  Does anyone here know what words are used in any of the dialects of
Chinese?
Thanks.

____________________________________
One should respect public opinion in so
far as is necessary to avoid starvation
and to keep out of prison, but anything
beyond this is voluntary submission to
an unnecessary tyranny.
-- Bertrand Russell

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