The first song put pen to paper to write that the Milky Way is falling in the west, and the crow is about to set sail, which renders an endless silent atmosphere and shows a feeling that the enemy is hopeless. The second poem is about great rivers and mountains, trapped in enemy territory, with the word "hope" as the eye, showing the poet's feelings of hope, disappointment and never despair. The poetic scene is majestic, serious, desolate and sad.