This is getting tedious.
Do an online search for “YunFeng (Knowing, Deviner)warned on June 30 2009, a series of air crashes and accidents would happen in America in near future day.” I found nine pages of results, where it’s this guy (usually under the user name of Chen Jian) posting comment after comment after comment. A little more searching turns up literally hundreds of different websites that he copies and pastes this stuff onto. And he never seems to acknowledge anybody else or anything else on those websites, either. He just pastes the exact same stuff.
It seems that he might be based in Michigan.
Basically, he seems to be the mouthpiece of another “prophet” who can only predict things after they’ve already happened; he is given a script which he copies and pastes all over the Internet to try to direct people to the “prophet’s” webpage, where they have information on how to buy his book.