The leopard cannot change his spots.
江山易改,本性难移。
There is an old saying that comes from the Bible, “The leopard cannot change his spots.” This simply means that one cannot change his character, just as the leopard cannot get rid of the spots it was born with.
有句出自圣经的古老谚语说:“江山易改,本性难移。”这句话的意思是指人们无法改变他们的性格,就像豹不能除去它一生下来就有的斑点一样。