《汉书·志·五行志中之上》
国民不为国丧而哀，是心不敬君；君也没有哀痛的表现，是不念亲人。
国不恤丧，不忌君也；君亡戚容，不顾亲也。
People didn’t mourn for the national funeral, which means disrespect; Duke didn’t show sorrow either, which means not missing his relative.