A poem about parents leaving their children?

"The Book of Songs Xiaoya Cai Wei" "I passed, Yang Liuyi. Think about it today, it's raining and snowing. " "The Book of Songs Xiaoya Caiqing" "I often go to Yangliuyiyi. I think about it today, it's raining. " "The Book of Songs Xiaoya Cai Wei" "I passed, Yang Liuyi. Think about it today, it's raining and snowing. "