Ji Kang was one of the Seven Sages of the Bamboo Grove.
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Not used as a common word - it functions only as a surname (and an old mountain name). The left side is 禾 over a base, with 山 (mountain) as the radical pointing back to the place-name origin.
Wei-dynasty philosopher, poet and qin master, leader of the Seven Sages of the Bamboo Grove; executed for defying the Sima clan. The single most famous bearer of the surname 嵇.