What are the characteristics of Jiangnan music?

I don't know whether you are talking about folk songs, silk bamboo or opera.

Some Nanyin folk songs have completely different styles, charms and forms. For example, the Jiangnan minor "No Tin Scene" is a typical southern tone color. Its formal elements are characterized by the comprehensive use of five tones, narrow rhyme 56 1, 653 and small rhyme 123. Progressive spiral method, continuous development, four-sentence structure moving down gradually, exquisite and gorgeous melody decoration, soft and charming style.

Jiangnan Sizhu: an instrumental music popular in southern Jiangsu, Shanghai and western Zhejiang. The band is mainly composed of string instruments and bamboo wind instruments, so it is called silk and bamboo music. Silk and bamboo music is very popular in cities and rural areas in these areas, but its style is completely different. Urban silk and bamboo music is elegant and gorgeous, with a hundred flowers blooming and spreading widely; Gong and drums are often used in rural areas, with warm atmosphere and simple style.