Google's data is biased since the service virtually doesn't exist there. This one better describes the situation: https://blog.apnic.net/2019/01/03/ipv6-in-chi

Google's data is biased since the service virtually doesn't exist there. This one better describes the situation: https://blog.apnic.net/2019/01/03/ipv6-in-china/ https://blog.apnic.net/2019/01/03/ipv6-in-china/