Just because a musical work was produced during the chaos produced by the colonialist directed Cultural Revolution doesn't mean that it is without aesthetic value. It sounds like the work of US Communist composer Aaron Copeland, but with Chinese melodic themes.
You made some mistakes. "colonialist" is not the label of China but of some western countries. And, this work was composed in 1963, two years later after the movie "The Red Guards on Hong Lake", and three years before the Cultural Revolution.
Another adaption for violin concerto from the same movie music may be recommend to you: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-vFNAOSFWj9Y.html
