《明史·志·卷六十八》
文帝勤于治理远方，派遣使者到极远的地方，外国来朝的很多，然而所重视的不在马的方面。
文帝勤远略，遣使绝域；外国来朝者甚众，然所急者不在马。
Emperor Wen diligently ruled over distant areas, dispatching envoys to even the most remote places. Many foreigners came to court, but the emphasis was not on horses.