江山易改，本性难移
jiāng​shān​yì​gǎi​běn​xìng​nán​yí

you can't change who you are

江山易改，本性难移 江山易改，本性難移 jiāng​shān​yì​gǎi​běn​xìng​nán​yí
you can't change who you are
(idiom) it is easier to change mountains and rivers than to alter one's character; used to emphasize that a person's nature is deeply rooted and difficult to change
a leopard cannot change its spots
rivers and mountains are easy to change, but a person's nature is hard to alter; it is difficult to change one's fundamental character

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