On November 25 to 26, zhang ye, gansu province high winds dust weather. According to monitoring, shandan most regional station greatly speeds of more than 20 m/s, instantaneous wind speed extremum 24. 4 m/s ( Mr Towns) 。 Share the bike, part of the graph is the wind blow down the street building at the top of the solar water heater also blow to fall to the ground, has brought people a safe hidden trouble. ( Li Chaohong)