The theme song of "Fairy Lake", "With you for a lifetime", was composed by He Muyang, the father of modern folk songs and a famous composer, and lyrics were filled in by Hwa Fang, a famous lyricist in China. The song is extremely difficult to interpret, and the power singer Sun Nan, who is famous for his high notes, had to lament when he got the song, "This is challenging the limits of the vocal cords."