差之毫厘，谬以千里 (差之毫釐，謬以千里) chà zhī háo lí, miù yǐ qiān lǐ

chà zhī háo lí, miù yǐ qiān lǐ phrase the slightest difference leads to a huge error; a miss is as good as a mile
Domain: Proverb 谚语
Notes: (CC-CEDICT '差之毫釐，謬以千里')