Advection fog scenery is seen over wetlands in Bayingolin Mongol autonomous prefecture in northwest China's Xinjiang Uygur autonomous region on September 14,2020. (Photo: China News Service/Que Hure)

Advection fog scenery is seen over wetlands in Bayingolin Mongol autonomous prefecture in northwest China's Xinjiang Uygur autonomous region on September 14,2020. (Photo: China News Service/Que Hure)

Advection fog scenery is seen over wetlands in Bayingolin Mongol autonomous prefecture in northwest China's Xinjiang Uygur autonomous region on September 14,2020. (Photo: China News Service/Que Hure)

Advection fog scenery is seen over wetlands in Bayingolin Mongol autonomous prefecture in northwest China's Xinjiang Uygur autonomous region on September 14,2020. (Photo: China News Service/Que Hure)

Advection fog scenery is seen over wetlands in Bayingolin Mongol autonomous prefecture in northwest China's Xinjiang Uygur autonomous region on September 14,2020. (Photo: China News Service/Que Hure)