Old Shanghai songs are generally recognized by scholars as the source of Chinese pop songs. In a general sense, old Shanghai songs refer to period songs from the 1920s to the 1940s. The beginning of old Shanghai songs is marked by Li Jinhui's song "Drizzle" and its song and dance music. The maturity and heyday of old Shanghai songs are represented by the "double wall of Shanghai pop music scene" formed by the "Shanghai Gang of Five" and Li Jinguang and Chen Gexin.