China says it wants to open its economy more to the rest of the world, but Beijing keeps a tight grip on technology and access to media. These 11 items are still off limits.
Gmail is one of many Google services to be severely restricted by Chinese regulators.
And you can't see Google (GOOGL) search results or YouTube videos in China.
Google has for years engaged in a running battle with Beijing over censorship. In 2010, Google redirected search traffic from mainland China to its uncensored Hong Kong arm and largely pulled out of the market. The relationship has improved little since then.
Determined users can still access Gmail through a Virtual Private Network (VPN), which masks the origin of web traffic. But even those efforts can at times be disrupted by the Great Firewall.