老朽无能

Explanation: Decrepit: aging stereotypes. Aging can not do anything to describe people. 　　Source: Zheng Yu, "celebrating Weishan Tanzhou large circle Zen Temple Inscriptions order" to delay the acquisitiveness Shen, Battle decrepit of skeletal muscle. " 　　Examples: Our lifetime who is ~, the "hero of Youth", but added a career can be done ... .... (Qing Li Baojia "Bureaucrats" Fifty-back)