Photo shows the fog-shrouded Cairo, Egypt, Jan. 4, 2022. A heavy fog on Tuesday hit Cairo, causing poor visibility in the city. (Xinhua/Sui Xiankai)
Photo shows a fog-shrouded wharf on the Nile River in Cairo, Egypt, Jan. 4, 2022. A heavy fog on Tuesday hit Cairo, causing poor visibility in the city. (Xinhua/Sui Xiankai)
Buildings are shrouded in a heavy fog in Cairo, Egypt, Jan. 4, 2022. A heavy fog on Tuesday hit Cairo, causing poor visibility in the city. (Xinhua/Sui Xiankai)
Vehicles run on a road in Cairo, Egypt, Jan. 4, 2022. A heavy fog on Tuesday hit Cairo, causing poor visibility in the city. (Xinhua/Sui Xiankai)
Buildings are shrouded in a heavy fog in Cairo, Egypt, Jan. 4, 2022. A heavy fog on Tuesday hit Cairo, causing poor visibility in the city. (Xinhua/Sui Xiankai)
Photo shows a fog-shrouded wharf on the Nile River in Cairo, Egypt, Jan. 4, 2022. A heavy fog on Tuesday hit Cairo, causing poor visibility in the city. (Xinhua/Sui Xiankai)