《明史·志·卷六十五》
于是征集九边的突骑家丁几万人到京城，称为外四家。
于是集九边突骑家丁数万人于京师。名曰外四家。
Thus, several tens of thousands of cavalrymen and armed retainers from the nine border regions were recruited to come to the capital, and they were called the Four Guard Units.
<s>[INST] 将以下现代汉语文本改写为文言文: 于是征集九边的突骑家丁几万人到京城，称为外四家。 [/INST] 于是集九边突骑家丁数万人于京师。名曰外四家。</s>
将以下现代汉语文本改写为文言文: 于是征集九边的突骑家丁几万人到京城，称为外四家。
user
于是集九边突骑家丁数万人于京师。名曰外四家。
assistant