投入
tóurù · HSK 4
throw/put into
🎯 投 = throw, 入 = enter; throw yourself into it
投入 literally means throw-enter: to throw something into, or to throw oneself into a task. Used for investing money, energy, or focus — anything you commit fully into a place or activity.
投 — hand radical 扌 + weapon 殳
Originally a pictograph of a hand (扌) throwing or hurling a weapon or staff (殳). The core meaning 'to throw, cast, hurl' extended over time to figurative senses like 'to invest,' 'to deliver,' or 'to throw oneself into' something.
入 — single pictograph, two slanting strokes
入 is a pictograph showing an arrowhead or pointed entrance, with two strokes converging downward to suggest something going inward. The original sense was 'to enter,' and it still carries that meaning today. It contrasts visually with 人 (person), where the strokes cross differently at the top.