《晋书·志·第九章》
对于不满八岁而夭折的孩子，郑玄说孩子生下后满了一个月就哭他一天，王卢说把哭的日敷改成服丧一个月。
无服之殇，郑云子生一月哭之一日，王云以哭之日易服之月。
Zheng Xuan said after a child died before he turned eight, mourn him one day after he was born a month, while Wang Lu said to mourn for a month instead of crying a day.