宋之问和刘希夷两人是血浓于水的舅甥关系,两人年龄差不多,又都是当时才华横溢的诗人。刘希夷早年丧父,寄养于外祖父家,他把舅舅宋之问当作了自己最亲最敬的人。刘希夷写了一首《代悲白头翁》的诗,呈送给舅舅,征询他的意见。宋之问看后大为惊叹,当他读到“今年花落颜色改,明年花开复谁 Song Zhi and Liu Xiyi two are thicker than the relationship between water uncle, both about the same age, they are also talented poet. Liu Xi-yi lost his father in his early years, foster care at grandfather's home, he asked his uncle, Song as their most dearest tribute people. Liu Xiyi wrote a poem entitled ”Generation of Prayers of Poverty,“ and presented it to his uncle for advice. After looking at the song greatly amazed, when he read ”color change this year, next year to spend more