維基辭典YueWord
Original phonetic: /saːm⁵⁵ t͡sʰɔːi̯²¹/
the "three talents" - sky (天 (tiān)), earth (地) and people (人 (rén)) (one who knows all three well would be an all-rounded person)
Examples
人為三才中，豈不以我故？
The man is ranked with heaven and earth Because I myself have my genuine worth.