学步邯郸

xuébù-hándān

[imitate sb.in certain particulars; imitate sb.slavishly and lose one's own originality] 《汉书·叙传上》: "昔有学步于邯郸者, 曾未得其仿佛, 又复失其故步, 遂匍匐而归耳。 "比喻模仿人不到家, 反把自己原来会的东西忘了