China also has relatively few people that simultaneously speak English well enough to read/post here while also having easy access to VPNs. If I had to take a guess I would bet there are more people that are Chinese first generation emigrants that live outside of China on HN than there are Chinese citizens that live inside China on HN.
Pretty much anyone who speaks English well enough to read/post here would have easy access to a VPN. Firewall is easy to hop, you just need to know that you want to.
