《宋书·列传·卷九十五》
如果不是相互聘用的使者，不可南北交通。
自非聘使行人，无得南北。
If they are not envoys mutually employed, they may not travel between the north and the south.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 自非聘使行人，无得南北。 [/INST] If they are not envoys mutually employed, they may not travel between the north and the south.</s>
Explain the meaning of this Classical Chinese passage in English: 自非聘使行人，无得南北。
user
If they are not envoys mutually employed, they may not travel between the north and the south.
assistant