"The Swallow Returns to the Nest".
1. Excerpts from the lyrics: Songs echo in the mountains and rivers, reverberating with the heat of longing. Two lines from last year’s letter home make my eyes warm again when I read them. I quietly bathe in the warm sun by the clouds and water. My long-lost hometown is in the mist. Farewell. Come and be safe, you are in my heart.
2. "Swallows Return to the Nest" is a song written and composed by Xu Song and sung by Zhang Liangying and Zhang Jie. It is included in the album "Swallows Return to the Nest".