San Francisco as dark as night at noon due to wildfire

Photo taken on Sept. 9, 2020 shows the street view of the Chinatown at noon in San Francisco, the United States. San Francisco was still as dark as night at noon on Wednesday due to the wildfire. The Northern California wildfire has been burning for more than three weeks, forcing thousands to leave their homes and threatening other structures. (Xinhua/Wu Xiaoling)