《北史·本记·卷二》
十九日，回师，留常山王素、执金吾桓贷镇守统万。
辛酉，班师。留常山王素、执金吾桓贷镇统万。
On the 19th, he returned, leaving Changshan Wang Su and Zhijingu Huan Dai to guard Tongwan.
<s>[INST] First, translate the Classical Chinese text into modern Chinese and then into English. Classical Chinese: 辛酉，班师。留常山王素、执金吾桓贷镇统万。 [/INST] 十九日，回师，留常山王素、执金吾桓贷镇守统万。 Then, On the 19th, he returned, leaving Changshan Wang Su and Zhijingu Huan Dai to guard Tongwan.</s>
First, translate the Classical Chinese text into modern Chinese and then into English. Classical Chinese: 辛酉，班师。留常山王素、执金吾桓贷镇统万。
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十九日，回师，留常山王素、执金吾桓贷镇守统万。 Then, On the 19th, he returned, leaving Changshan Wang Su and Zhijingu Huan Dai to guard Tongwan.
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