Behind China’s landmark crackdown on the e-commerce and food-delivery sectors lies a darker narrative of resistance, secrecy and violence, after regulators uncovered a vast network of “ghost” bakeries and imposed a record fine on seven major platforms. The State Administration for Market Regulation (SAMR) levied a 3.6 billion yuan (US$528 million) fine on seven platforms run by PDD Holdings, Meituan, JD.com, Alibaba Group Holding and ByteDance, with the probe revealing a hidden office, violent...