Aerial photo shows skyscrapers shrouded in fog in Hunnan District of Shenyang, northeast China's Liaoning Province on Jan. 26, 2021. (Xinhua/Yang Qing)
Aerial photo shows skyscrapers shrouded in fog in Hunnan District of Shenyang, northeast China's Liaoning Province on Jan. 26, 2021. (Xinhua/Yang Qing)
Aerial photo taken on Jan. 26, 2021 shows thick fog in Hunnan District of Shenyang, northeast China's Liaoning Province. (Xinhua/Yang Qing)
Aerial photo shows skyscrapers shrouded in fog in Hunnan District of Shenyang, northeast China's Liaoning Province on Jan. 26, 2021. (Xinhua/Yang Qing)
Aerial photo shows a skyscraper shrouded in fog in Hunnan District of Shenyang, northeast China's Liaoning Province on Jan. 26, 2021. (Xinhua/Yang Qing)
Aerial photo shows skyscrapers shrouded in fog in Hunnan District of Shenyang, northeast China's Liaoning Province on Jan. 26, 2021. (Xinhua/Yang Qing)
Aerial photo shows a skyscraper shrouded in fog in Hunnan District of Shenyang, northeast China's Liaoning Province on Jan. 26, 2021. (Xinhua/Yang Qing)