《左传·襄公·襄公二十七年》
九月初五日，在崔氏的朝廷上，崔成、崔强把东郭偃和棠无咎杀了。
九月庚辰，崔成、崔彊杀东郭偃、棠無咎于崔氏之朝。
On September 5th, in the court of Cui, Cui Cheng and Cui Qiang killed Dong Guo Yan and Tang Wu Jiu. 
<s>[INST] Kindly elucidate the central themes in this passage in English: 九月庚辰，崔成、崔彊杀东郭偃、棠無咎于崔氏之朝。 [/INST] On September 5th, in the court of Cui, Cui Cheng and Cui Qiang killed Dong Guo Yan and Tang Wu Jiu. </s>
Kindly elucidate the central themes in this passage in English: 九月庚辰，崔成、崔彊杀东郭偃、棠無咎于崔氏之朝。
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On September 5th, in the court of Cui, Cui Cheng and Cui Qiang killed Dong Guo Yan and Tang Wu Jiu.
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