决心
juéxīn · HSK 3
determination
💪 决 = decide + 心 = heart; settled heart = determination
决 carries the sense of deciding or settling a matter, and 心 means heart or mind. A heart that has been decided on something is the literal source of 决心 — resolve fixed from within.
心 — pictograph of a heart with chambers and aorta
心 is a pictograph showing a stylized heart, with strokes representing the organ's chambers and the aorta at the top. Originally meaning the physical heart, it broadened to cover mind, feelings, and intentions, since ancient Chinese thought located thinking and emotion in the heart.