By virtue of their unique technical specifications and cultural valences, recorded audio formats bring issues of science and technology, industrial organization, artistic and cultural production, and media interplay to the fore. This biography examines the flexi-disc or flexi and its emergence in the PRC after 1968. It pays particular attention to the ways in which the Chinese flexi was deployed in a manner at odds with global trends: rather than be tied to subscription magazines, the Chinese flexi was the purview of local stations broadcasting over loudspeaker.
Many propaganda images were produced by cultural workers to be experienced on public walls, either as murals or blackboard paintings. In villages and communes, mural and wall images were key visual forms for conveying ideology, popular knowledge, and political campaigns, but peasants also participated in making propaganda as mass art. During the Great Leap Forward, peasants were mobilized through the mass mural campaign in order to demonstrate the creative revolution in the countryside. In order to understand how these images became so pervasive in message and style, this entry describes the production, themes, and major concepts behind wall art.