The poet returned to Yan 'an, the cradle of revolution where he lived for many years, and to his dream second hometown. Now he looks at it again and is deeply touched, so he wrote this passionate and popular political lyric poem.
Taking the process of "returning to Yan 'an" as a clue, the whole poem describes the joy of returning to Yan 'an, the mother, and reuniting with relatives after a long absence of ten years, showing the author's childlike innocence of missing Yan 'an and expressing his attachment to Yan 'an, his mother.