《魏书·列传·卷八十三》
当初，刘琨来朝廷告急，晋穆帝亲自统率大军，令长子六攻击刘粲等人，把他们打败。
先是，刘琨来告难，穆帝亲率大众，令长子六修击粲等，大破之。
At that time, when Liu Kun came to the court for help, Emperor Mu of Jin personally led a large army and ordered his eldest son Liu Ke to attack Liu Can and his followers, defeating them.
<s>[INST] Kindly elucidate the central themes in this passage in English: 先是，刘琨来告难，穆帝亲率大众，令长子六修击粲等，大破之。 [/INST] At that time, when Liu Kun came to the court for help, Emperor Mu of Jin personally led a large army and ordered his eldest son Liu Ke to attack Liu Can and his followers, defeating them.</s>
Kindly elucidate the central themes in this passage in English: 先是，刘琨来告难，穆帝亲率大众，令长子六修击粲等，大破之。
user
At that time, when Liu Kun came to the court for help, Emperor Mu of Jin personally led a large army and ordered his eldest son Liu Ke to attack Liu Can and his followers, defeating them.
assistant