用心 (yòng xīn) means “motive; intention; to be diligent or attentive; careful”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
她用心准备了这次演讲。
Tā yòngxīn zhǔnbèi le zhè cì yǎnjiǎng.
She carefully prepared this speech.
Updated: 2026-07-18