江郎才尽（江郎才盡）　

◎ 江郎才尽 Jiāngláng-cáijìn

[one‘s literary talent is at an ebb;have lost one‘s talent;one‘s inpiration has dried up] 原指南朝才子江淹后期才思衰竭一事,今喻文人的才华穷尽