《后汉书·列传·虞傅盖臧列传》
祝贺你啊，哀吊的人已经进入你的房子了，不值得小心吗？ 
贺者在门，吊者在庐，可不慎哉！ 
Congratulations, a mourner has entered your house, shouldn’t you be careful?
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 贺者在门，吊者在庐，可不慎哉！  [/INST] Congratulations, a mourner has entered your house, shouldn’t you be careful?</s>
Explain the meaning of this Classical Chinese passage in English: 贺者在门，吊者在庐，可不慎哉！
user
Congratulations, a mourner has entered your house, shouldn’t you be careful?
assistant