《三国志·魏书·武文世王公传》
太和六年，又进封号为怀王，追谥曹赞为西乡哀侯。
六年，又进号曰怀王，追谥赞曰西乡哀侯。
In the sixth year of Taihe Emperor, he was further honoured with the title Huai Wang, and posthumously honoured Cao Zan was honoured with the title Xixiang Ai Hou.
<s>[INST] Translate the following Classical Chinese text into English: 六年，又进号曰怀王，追谥赞曰西乡哀侯。 [/INST] In the sixth year of Taihe Emperor, he was further honoured with the title Huai Wang, and posthumously honoured Cao Zan was honoured with the title Xixiang Ai Hou.</s>
Translate the following Classical Chinese text into English: 六年，又进号曰怀王，追谥赞曰西乡哀侯。
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In the sixth year of Taihe Emperor, he was further honoured with the title Huai Wang, and posthumously honoured Cao Zan was honoured with the title Xixiang Ai Hou.
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