Hu Qiaomu's name comes from which poem?

Hu Qiaomu, formerly known as Hu Dingxin, was later renamed as Hu Qiaomu. The name "arbor" comes from a poem in The Book of Songs Xiaoya Logging: "Move from the valley to the arbor", which means tall and straight. When they got married, Hu Qiaomu changed Li Guiying's name to Grain Rain according to the same poem.