本性難移 [ㄅㄣˇ ㄒㄧㄥˋ ㄋㄢˊ ㄧˊ; ben3 xing4 nan2 yi2] It is hard to change one's essential nature (idiom). You can't change who you are. Can the leopard change his spots? (Jeremiah 13:23) ◄ ►