Not Singapore behind, as Singapore more SMART then China? If net down how are you going to pay? Still cash, if not wait what if the system don't recover immediately wait there? Shop no need to close or hawkers no need to go home? Do you know what that guy talking? Like that must well forever stay in China.
Most countries in the world still use credit cards except China because counterfeit notes and credibility are major problems there. And CASH IS ALWAYS KING. We have to consider people who are not so technically savvy especially the elderly. Anyway, since we're SO BACKWARD comparatively, please stay home😁