"Waterweed Dance" comes from an excerpt from the ballet "The Fish Mermaid". It is a group dance depicting the underwater world in the play. It was composed by Wu Zuqiang and Du Mingxin in 1959. The original music was an orchestral piece, and later Arranged for piano. Although the piano version does not have as rich tones and layers as the orchestra version, it can still be called a beautiful masterpiece among Chinese piano music.