《周书·列传·卷十八》
在他为祖父服丧时，非常合乎礼仪的规定要求。
及居丧，深合礼度。
When he was in mourning for his grandfather, he was very much in accordance with the etiquette requirements.
<s>[INST] Transpose the following Modern Chinese text into Classical Chinese: 在他为祖父服丧时，非常合乎礼仪的规定要求。 [/INST] 及居丧，深合礼度。</s>
Transpose the following Modern Chinese text into Classical Chinese: 在他为祖父服丧时，非常合乎礼仪的规定要求。
user
及居丧，深合礼度。
assistant