【色厉内荏】〖sè lì nèi rn〗[appear to be tough outwardly, be timid inwardly; appear severe, but weak inside; be ferocious in appearance but feeble in essence; be fierce in appearance but faint in heart]

色仁行违背道驰，

厉角矫尾气颐使。

内柔外刚表假象，

荏弱难持盗名欺。

外表强硬，内心虚弱。Appearance tough, heart weakness. 同：外强中干、虚有其表。反：表里如一、名副其实。