《左传·桓公·桓公十一年》
二十五日，郑厉公立为国君。
己亥，厉公立。
In the 25th day, Duke Li of Zheng became ruler of the state.
<s>[INST] Provide a modern Chinese interpretation of the following Classical Chinese passage: 己亥，厉公立。 [/INST] 二十五日，郑厉公立为国君。</s>
Provide a modern Chinese interpretation of the following Classical Chinese passage: 己亥，厉公立。
user
二十五日，郑厉公立为国君。
assistant