《元史·本纪·卷二十七》
初四，因立皇后下诏天下。
癸卯，以立后诏天下。
On the 4th of the first lunar month, an imperial edict was issued to the whole nation regarding the appointment of an empress.
<s>[INST] Provide a modern Chinese interpretation of the following Classical Chinese passage: 癸卯，以立后诏天下。 [/INST] 初四，因立皇后下诏天下。</s>
Provide a modern Chinese interpretation of the following Classical Chinese passage: 癸卯，以立后诏天下。
user
初四，因立皇后下诏天下。
assistant