On April 10, floating dust weather occurred in Lanzhou, Gansu. According to the relevant information released by the China Meteorological Administration that day, the Air Quality Index (AQI) was the most serious at 10 o'clock, and the highest value reached 500. During this period of time, the reporter saw aerial photography of the relatively empty Pengjiaping Central Ecological Park in Lanzhou. Although the tall buildings in the distance are very dense, they are looming under the influence of floating dust, just like a "mirage". (Reporter Li Yalong)

Editor in charge: [Liu Xian]