Behind schools' phone bans

China is pushing harder to remove phones from classrooms, and a new Chongqing regulation marks a notable escalation. Schools there can now ban smartphones, tablets, and smartwatches, but this measure sits inside a juvenile crime prevention law rather than an education policy. That raises difficult questions about the link between screen habits and criminal behavior, and whether real evidence justifies the connection. On the show: Steve, Yushan & Yushun