Weather modification? Blue sky vanishes immediately after Beijing's massive parade

This photo shows two images of the view from CNN's Beijing Bureau, one of a blue sky day from a week before the military parade and one of a hazy sky the day after the parade.

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Beijing (CNN)Well, that was quick.

Less than 24 hours after the end of China's massive military parade, Beijing is back to its usual smoggy self.
Residents woke up Friday morning to find the crystal blue skies that graced the city nearly two weeks suddenly gone -- in their place, the familiar sight and smell of dour gray pollution clouds.

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