1. Zizhu tune is a traditional folk song and love tune in the Jiangnan area. It is also the basic tune and commonly used tune in Shanghai local opera and comedy.

2. Zizhu tune was originally sung during the work of grinding tofu in the Shanghai Opera "Same Scene" "Double Off Flowers". While singing, the actor swayed his hands to strain the soy milk. This cloth bag for filtering soy milk is supported by two striped bamboo poles. The actors hold these two striped bamboo poles and sway when singing. This striped bamboo pole is called "Purple Bamboo". Since then, this folk song has been called "Purple Bamboo Tune" "Yes. It was originally a folk song with the local flavor of Jiangnan, a place with beautiful mountains and clear waters and abundant fish and rice. Its melody is ups and downs and hearty, the mood is optimistic and friendly, the tune is one sentence after another, the rhythm is lively and bright, and it is full of the simple and hard-working character of the working people in the Jiangnan area.

3. Music generally consists of six phrases as one section, with regular changes in mode and soft and fluent melody. The music vividly expresses the scene of a couple of children loving each other and is full of appeal and interest in life. Among the folk music, there are not only erhu, guzheng and flute versions of "Purple Bamboo Tune", but also folk music ensemble "Purple Bamboo Tune". Lyrical, melodious and euphemistic folk tunes, full of Jiangnan local flavor.