What is the influence of traditional Central Plains music culture as the parent culture on Hong Kong film music?

The popularization of Mandarin contemporary music, the application and innovation of folk music, and the formation and development of characteristic opera films. The influence of traditional Central Plains music culture on Hong Kong film music is mainly reflected in the popularity of Putonghua contemporary music, the application and innovation of folk music, and the formation and development of characteristic opera films. In the process of continuous development, Hong Kong culture has been influenced by the traditional Central Plains music culture, constantly absorbing, learning and innovating, and formed a unique cultural pattern.