《宋史·列传·卷五十七》
陈希亮缓缓地问他们有什么困苦，再命一老兵押着他们，并说 ：把他们交送到叶县，听我的命令。 到了叶县后，下令说 ：你们因为自首，都无罪，但一定有个首谋。 众人不敢隐瞒，于是斩周元示众，将一个军校流放，其余都遣派服役如同从前一样。
希亮徐问其所苦，命一老兵押之，曰： 以是付叶县，听吾命。 既至，令曰： 汝以自首，皆无罪，然必有首谋者。 众不敢隐，乃斩元以徇，流军校一人，余悉遣赴役如初。
Chen Xiliang slowly asked them what hardships they had, and then ordered an old soldier to escort them, saying: "Send them to Yexian and listen to my orders." After arriving in Yexian, he ordered: "You are not guilty because you surrendered yourself, but you must have a mastermind." People dared not conceal it, so they beheaded Zhou Yuan to show the public, exiled a military officer and sent the rest to serve as before.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 希亮徐问其所苦，命一老兵押之，曰： 以是付叶县，听吾命。 既至，令曰： 汝以自首，皆无罪，然必有首谋者。 众不敢隐，乃斩元以徇，流军校一人，余悉遣赴役如初。 [/INST] Chen Xiliang slowly asked them what hardships they had, and then ordered an old soldier to escort them, saying: "Send them to Yexian and listen to my orders." After arriving in Yexian, he ordered: "You are not guilty because you surrendered yourself, but you must have a mastermind." People dared not conceal it, so they beheaded Zhou Yuan to show the public, exiled a military officer and sent the rest to serve as before.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 希亮徐问其所苦，命一老兵押之，曰： 以是付叶县，听吾命。 既至，令曰： 汝以自首，皆无罪，然必有首谋者。 众不敢隐，乃斩元以徇，流军校一人，余悉遣赴役如初。
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Chen Xiliang slowly asked them what hardships they had, and then ordered an old soldier to escort them, saying: "Send them to Yexian and listen to my orders." After arriving in Yexian, he ordered: "You are not guilty because you surrendered yourself, but you must have a mastermind." People dared not conceal it, so they beheaded Zhou Yuan to show the public, exiled a military officer and sent the rest to serve as before.
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