As a person living in China for a couple of months and primarily working on foreign sites all day and night I can say this is false. Sites are throttled to hell and magically speed up upon connecting to a VPN... And your VPNs are constantly under attack too.
It's also highly dependant on the time of day. Foreign sites are near unusable from around 7pm onwards
It's also highly dependant on the time of day. Foreign sites are near unusable from around 7pm onwards