China has a population of 1.4B, US is 349M. 0-8 Beijing time is their off-peak? How is that funny, that's literally how timezones work?
You can check for yourself here to see that China and Hong Kong are conveniently missing. We do see blocking from Anthropic and Gemini as well in some regions
Also even though Vietnam and the Philippines are technically supported we do see blocking from some IP addresses in those regions too