Nà gè niándài de háizi dōu yòng kǎdài tīng yīnyuè.
Children of that era all listened to music on cassette tapes.
Tips
history
卡带 dominated music consumption in China through the 1980s and 1990s. Cassette players (随身听, Walkman-style) were a prized possession. The format has seen a niche revival as retro/nostalgia culture.