It's been blocked from my apartment in Wuhan with the instant "Connection Reset" message for the last 6 months, whereas the rest of the Python.org site has been available. Perhaps the national Firewall can target geographic areas inside China, and someone in the Firewall Bureau wanted to restrict Python's available somewhat, but hide the fact by limiting it download page outside the main cities. Though I can't imagine why! Or perhaps it's being blocked at a more local (ISP) level, but I think that's unlikely. I'll check it next time I'm at Starbucks with my laptop.