北门之寄

Explanation: Refers to the negative of military responsibility. 　　Source: "Old Tang Lizi Liang Chuan": "Dezon to close near east Hu Rong, difficult to choose handsome, the following day, since good thanks, on that I said: 'Ma Sui Qing and keep things the military points, the best for De-li; then North Send doors, no easy-to-Ching '. " 　　Examples: Gu Qin worries over the West, the public specially appointed ~. Song Yueke "Huan Shi Wu Wei Chai Xie Zhi Kai"