My personal favorite (heard in Beijing in the early 2000s) was the story that the Chinese military were monitoring the newly deployed American stealth fighters during the Belgrade bombing and had managed to get radar lock on one (or more) of the F-117As from their embassy. The Americans, the story goes, wanted no more of this and bombed the Chinese embassy.
According to The Font of all Knowledge [0] three Chinese "reporters" were killed in what the CIA admitted was its own bombing operation. It has long been common knowledge that the Chinese government uses the Xinhua news agency as a cover for clandestine operatives [1].
True or false, it'still an inventive rumor.
[0] (https://en.m.wikipedia.org/wiki/United_States_bombing_of_the...) [1] (http://www.nytimes.com/2000/02/20/world/in-watching-hong-kon...)