> > Call 911 (police); at least in my country they will do the job. Any internet > provider > > must show account of their users to the local police. > > I highly doubt that will work. There's very little chance that the Chinese government > would do anything about this, especially if this person is located in China and > changing his IP so much.
Why not ? - China has the most "controlled" internet in the world (right after USA).