《隋书·帝纪·卷一》
九月初五，高祖巡幸襄国公主府第。
九月甲子，幸襄国公主第。
On the fifth day of the ninth month, Gaozu visited the mansion of Princess Xiangguo.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 九月甲子，幸襄国公主第。 [/INST] On the fifth day of the ninth month, Gaozu visited the mansion of Princess Xiangguo.</s>
Explain the meaning of this Classical Chinese passage in English: 九月甲子，幸襄国公主第。
user
On the fifth day of the ninth month, Gaozu visited the mansion of Princess Xiangguo.
assistant