本性难移běnxìngnányíMeanings1. It is hard to change one's essential nature (idiom). You can't change who you are.2. Can the leopard change his spots? (Jeremiah 13:23)Characters used本root性nature难difficult移to shiftExamples1江山jiāngshān易yì改gǎi，本性难移běnxìngnányí。A leopard never changes its spots.