《晋书·志·第十七章》
天戒这样说，设险要之地的守卫警备，是为了保卫国家，储备积存兵器，是为了防备意想不到的情况。
天戒若曰，夫设险击柝，所以固其国，储积戒器，所以戒不虞。
Heaven's injunction states that the purpose of guarding key strategic locations is to protect the state, and the purpose of stockpiling weapons is to prepare for unexpected situations.