Tā cōngming yòu qínfèn, liǎng zhǒng yōudiǎn jiān'éryǒuzhī.
He's both smart and diligent - he has both qualities.
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From 《墨子·法仪》: 兼而有之,兼而食之 ('embraces them all, feeds them all'), originally describing heaven's universal care. Modern use is narrower: simply combining two qualities or categories.