《明史·列传·卷九十二》
今建议者不撤消紫荆用来一起守卫宣府，岂可独撤雁门用来一起守卫大同呢？
今议者不撤紫荆以并守宣府，岂可独撤雁门以并守大同耶？
The present proposer does not withdraw Zijing to jointly defend Xuanfu, how can he withdraw Yanmen alone to jointly defend Datong?