➀ China deploys customs enforcement teams to intercept NVIDIA AI chips (H20/RTX 6000D) at ports amid tightened U.S. export controls;
➁ Domestic tech giants like ByteDance face shipment disruptions as China expands scrutiny to all advanced semiconductors;
➂ Gray market's repurposed A100/H100 chips and domestic chip production bottlenecks create dual pressures on China's AI infrastructure.