《北史·列传·卷八十四》
杨国的儿子杨安背叛苻坚，杀掉杨俊，又向晋朝称藩。
国子安叛苻生，杀俊，复称蕃于晋。
Yang Guo's son, Yang An, betrayed Fu Jian, killed Yang Jun, and submitted to the Jin Dynasty.
<s>[INST] First, translate the Classical Chinese text into modern Chinese and then into English. Classical Chinese: 国子安叛苻生，杀俊，复称蕃于晋。 [/INST] 杨国的儿子杨安背叛苻坚，杀掉杨俊，又向晋朝称藩。 Then, Yang Guo's son, Yang An, betrayed Fu Jian, killed Yang Jun, and submitted to the Jin Dynasty.</s>
First, translate the Classical Chinese text into modern Chinese and then into English. Classical Chinese: 国子安叛苻生，杀俊，复称蕃于晋。
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杨国的儿子杨安背叛苻坚，杀掉杨俊，又向晋朝称藩。 Then, Yang Guo's son, Yang An, betrayed Fu Jian, killed Yang Jun, and submitted to the Jin Dynasty.
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