行成于思 xíngchéngyúsī success depends on forethought Origin Definitions Defs Strokes Stroke Words Sentences Sents 行 xíng verb to do to do; to perform; to carry out; to engage in成 chéng verb to succeed to succeed; to finish; to be completed于 於 yú preposition because of Indicates a reason, cause, or purpose思 sī verbadjective to think (bound form) to think; to consider; to deliberate