In August 2020, DigiChina published Mapping US–China Technology Decoupling—a snapshot of measures that had already been taken in Washington and Beijing with the effect of unwinding interdependence. That mapping exercise identified actions taken by both governments to separate technology systems across categories including export controls, data, supply chains, encryption, financial untangling, and travel. This update to our 2020 map focuses specifically on actions by both sides affecting data handling and cross-border data flows.