Many are mentioning the Chinese government, but are there any signs that they are involved? How do we know that this isn't just a hijack of a Chinese isps dns

Many are mentioning the Chinese government, but are there any signs that they are involved? How do we know that this isn't just a hijack of a Chinese isps dns server or something similar? Maybe the same that happened to Goolge Morocco just a couple of days ago ( http://arabcrunch.com/2013/01/breaking-google-morocco-google-co-ma-is-hacked.html http://arabcrunch.com/2013/01/breaking-google-morocco-google... ).