《左传·襄公·襄公三年》
秋季，叔孙豹和诸侯的大夫同陈国的袁侨结盟，这是由于陈国请求顺服的缘故。
秋，叔孙豹及诸侯之大夫及陈袁侨盟，陈请服也。
In autumn, Shusun Bao and the officials of the vassals made an alliance with Yuan Qiao of Chen because Chen requested to submit.
<s>[INST] Kindly elucidate the central themes in this passage in English: 秋，叔孙豹及诸侯之大夫及陈袁侨盟，陈请服也。 [/INST] In autumn, Shusun Bao and the officials of the vassals made an alliance with Yuan Qiao of Chen because Chen requested to submit.</s>
Kindly elucidate the central themes in this passage in English: 秋，叔孙豹及诸侯之大夫及陈袁侨盟，陈请服也。
user
In autumn, Shusun Bao and the officials of the vassals made an alliance with Yuan Qiao of Chen because Chen requested to submit.
assistant