You may puzzled why both of them are blocked and what organization did it?
A possible answer is that there are some political sayings or erotic pictures Chinese Goverment dislike,they need to stop all "unhealthy and badness" information from pouring into China Internet.
The organization to do this is well known as Great Fire Wall (GFW), a part of the Gold Shield Project(金 盾工程).It can block any websites abroad,containing wikipedia(recently unblock),google,technorati and so on.The one way to break through the GFW is using Proxy,like torpack,or using website's security certificate mode which the domain start with https://
Many people think the GFW is one of the most complex and highest technology that Chinese own,what a quip!
