WHY NOW: THIS explains the ulterior motive behind all this Spy Balloon drama-Trailer

The incident of the Chinese Communist spy balloon, flying into U.S. airspace, recently received global attention. The use of balloons for spying, dates back nearly 230 years. In the high-tech 21st century, why does the CCP need to use balloons, for surveillance work? And, Is it a coincidence, that the spy balloon appeared at this time? And What kind of message is the Chinese Communist Party trying to send?