《金史·列传·卷六十六》
他的祖先是秦州沙溪人，后来迁徙到建昌。
其先秦州沙溪人，后徙建昌。
His ancestors were from Shaxi in Qinzhou and later moved to Jianchangfu. 
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 他的祖先是秦州沙溪人，后来迁徙到建昌。 [/INST] 其先秦州沙溪人，后徙建昌。</s>
Convert the following modern Chinese text into Classical Chinese: 他的祖先是秦州沙溪人，后来迁徙到建昌。
user
其先秦州沙溪人，后徙建昌。
assistant