The Internet censorship in China is notorious. Due to the Great Firewall, the state-sponsored censorship system, people can't access some blocked websites like Facebook, Twitter and YouTube. Sensitive words such as some dissidents' names are filtered in the search results.

On Sept. 14, 1987, the first e-mail sent from China to the world said, "Across the Great Wall, we can reach every corner in the world."

Ironically, today people in China have to use some anti-block software to cross the "Great Firewall" for access to the blocked websites. Indeed, the censorship has greatly restricted Internet freedom in China.