一日千里 yīrìqiānlǐ with giant strides Origin Definitions Defs Strokes Stroke Words Sentences Sents 一日 yīrì once (literary) once; in a very short time; the moment something happens千里 qiānlǐ a thousand li one thousand 里 lǐ; approximately 500 kilometers; used metaphorically to mean a very long distance