This is pretty terrifying. Like IPv6 is good and all but what do you think all of those sensors are doing? Spying on citizens. It's super weird that anyone would want to be associated with that.
I help run a bunch of gear in a data centre, and all of our IoT stuff (PDUs, cooling) don't have gateways to the public Internet. They're on a segmented VLAN/subnet which you have to contact through a jump box: no routing anywhere else.
> The office network at Xiong’an NGN Lab, a test case from the wider city, includes export routers, core switches, and network interconnection systems (NAT64+ALG), all deployed in a dual-stack environment. Office computers and OA servers operate in an IPv6-only area and communicate with external IPv4 network nodes through network protocol translation equipment and the interconnection system.