【梧鼠技穷】〖wú sh jì qióng〗[at one's wits' end; can do nothing more; The flying squirrel has exhausted its tricks; The skills, though many in number, are useless, if they are not exquisite]

梧桐断角柔克刚，

鼠啮蠹蚀臭声扬。

技尽黔驴才能限，

穷兵黩武美必亡。

比喻才能有限。Metaphor talent is limited.同：梧鼠五技。