《旧唐书·列传·卷一百三十八》
到崔伦去世后，崔衍侍奉李氏更加恭谨。
及伦卒，衍事李氏益谨。
When Cui Lun died, Cui Yan served Li even more respectfully.
<s>[INST] Render the following Classical Chinese text into fluent English: 及伦卒，衍事李氏益谨。 [/INST] When Cui Lun died, Cui Yan served Li even more respectfully.</s>
Render the following Classical Chinese text into fluent English: 及伦卒，衍事李氏益谨。
user
When Cui Lun died, Cui Yan served Li even more respectfully.
assistant