《北史·本记·卷十一》
可是，杨忠知道以后，后悔当时没有杀掉柳仲礼，所以这次他把萧纶杀了。
然皇考悔不杀仲礼，故至此杀纶。
However, after Yang Zhong found out about this, he regretted not having had Liu Zhongli killed back then, so this time, he had Xiao Lun killed.
<s>[INST] Convert the following English text into Classical Chinese: However, after Yang Zhong found out about this, he regretted not having had Liu Zhongli killed back then, so this time, he had Xiao Lun killed. [/INST] 然皇考悔不杀仲礼，故至此杀纶。</s>
Convert the following English text into Classical Chinese: However, after Yang Zhong found out about this, he regretted not having had Liu Zhongli killed back then, so this time, he had Xiao Lun killed.
user
然皇考悔不杀仲礼，故至此杀纶。
assistant