jackmeister

hard to say.. maybe they dont want drunken soldiers causing problems and social unrest.. the americans already have enough trouble in japan.

also.. probably the chinese government realizes that letting them into the harbour is really "no face"..
think about who's selling military weapons to taiwan, japan, and korea? also who "mistakenly" bombed the chinese embassy in Yugoslavia?

Dont forget.. right now china is surrounded by American allies.. The leadership doesn't feel comfortable.