"Like a spring breeze, the petals of ten thousand pear trees blow open overnight" comes from Bai Xuege Farewell to Tian Wu's Home in the prosperous Tang Dynasty, which means that it seems that a strong wind suddenly blows overnight and ten thousand pear trees bloom. This poem depicts the generous and warm scene of the frontier soldiers collectively bidding farewell to the envoys returning to Beijing. The whole poem takes the change of snow scene in one day as a clue, and describes the process of bidding farewell to envoys in Beijing. It has an open mind and a good structure.