Recently lots of Chinese found they experienced problems while trying to access Wikipedia, the world's largest and most well-known free encyclopedia. It turns out that the notorious Chinese GFW(Great Firewall) is playing the critical role here. It blocks the Chinese version of Wikipedia.The reason why the Chinese version of Wikipedia is blocked is said to be that Wikipedia has changed its default protocol from HTTP to HTTPS. This change made it difficult for the GFW to filter some sensitive information the Chinese government doesn't want their people to read. Speaking at the Leadersh...