《明史·列传·卷五十八》
到这时又派遣三干个使者来朝拜，于谦请求在居庸关部署部队以防备意外，京城也部署很多军队，然后宴请他们。
及是又遣使三千来朝，谦请列兵居庸关备不虞。京师盛陈兵，宴之。
At this time, they sent three thousand emissaries to pay homage to the court. Yu Qian requested that troops be deployed at Juyongguan to guard against unexpected situations. Many troops were also deployed in the capital, and then they were feasted.