《礼记·问丧》
所以孝子在前往送葬的路上，就像幼儿思慕父母那样哭泣不止；在葬毕返回的路上，又像是担心亲人的神灵不能跟着一道回来而迟疑不前。满腹心事而未曾了结，回到家里，推门一看，却怎么也见不到亲人的影子；上堂再看，还是见不到亲人的影子；进到亲人的住室再看，还是见不到亲人的影子。
故其往送也如慕，其反也如疑。求而无所得之也，入门而弗见也，上堂又弗见也，入室又弗见也。
Therefore, on the way to send the funeral, the filial son cried like a young child who missed his parents; on the way back after the funeral, he hesitated as if he was worried that his relatives would not be able to follow him back. heartbroken and unfinished, when I returned home, I pushed the door open, but I couldn't see my relatives anywhere; when I looked upstairs, I still couldn't see my relatives; when I went to my relatives' room, I still couldn't see my relatives anywhere.