Study on CCTV news production system transforming in the perspective of media sociology. Study on CCTV news production system transforming in the perspective of media sociology 并列题名：Study on CCTV news production system transforming in the perspective of media sociology Research on the changing production modes of Chinese UGC from the perspective of media technology Study on the transformation of Chinese TV format-from the persective of media ecology 并列题名：Research on the changing production modes of Chinese UGC from the perspective of media technology