This is the moment 15 unfinished buildings were demolished at the same time in southwestern China. The spectacular video was filmed in the city of Kunming in Yunnan Province on August 27. Fifteen unfinished buildings, which stood for seven years, were demolished at the same time and sent a large cloud of smoke into the air. Authorities decided to take action because the buildings had been abandoned for a long time and the basements were submerged in rain water. The total demolition area, measured by total floorspace and number of buildings, were reportedly the largest for a one-time demolition in China. The video was provided by local media with permission.