毫厘千里 háolíqiānlǐ a small error leads to a huge difference Origin Definitions Defs Strokes Stroke Words Sentences Sents 毫厘 毫釐 háolí an iota the least bit; an extremely small amount千里 qiānlǐ a thousand li one thousand 里 lǐ; approximately 500 kilometers; used metaphorically to mean a very long distance