《辽史·本纪·卷二十二》
八月十九日，耶律白逝世，追封为辽西郡王。
八月丙子，耶律白薨，追封辽西郡王。
On the nineteenth day of August, Yelu Bai passed away and was posthumously enfeoffed as the Prince of Liaoxi.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 八月丙子，耶律白薨，追封辽西郡王。 [/INST] On the nineteenth day of August, Yelu Bai passed away and was posthumously enfeoffed as the Prince of Liaoxi.</s>
Explain the meaning of this Classical Chinese passage in English: 八月丙子，耶律白薨，追封辽西郡王。
user
On the nineteenth day of August, Yelu Bai passed away and was posthumously enfeoffed as the Prince of Liaoxi.
assistant