《资治通鉴·梁纪·梁纪十二》
先前，火星进入南斗，离开了又回来共停留了六十天。
先是，荧惑入南斗，去而复还，留止六旬。
Earlier, Mars had entered the constellation Nan Dou and stayed there for 60 days before leaving and returning.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 先是，荧惑入南斗，去而复还，留止六旬。 [/INST] Earlier, Mars had entered the constellation Nan Dou and stayed there for 60 days before leaving and returning.</s>
Explain the meaning of this Classical Chinese passage in English: 先是，荧惑入南斗，去而复还，留止六旬。
user
Earlier, Mars had entered the constellation Nan Dou and stayed there for 60 days before leaving and returning.
assistant