Photo taken on Aug. 15, 2021 shows the National Carillon in thick fog in Canberra, Australia.

Photo taken on Aug. 15, 2021 shows the Parliament House in thick fog in Canberra, Australia. (Photos: Xinhua)

Photo taken on Aug. 15, 2021 shows the Telstra Tower above Black Mountain in thick fog in Canberra, Australia.

Photo taken on Aug. 15, 2021 shows the morning fog scenery in Canberra, Australia.

Photo taken on Aug. 15, 2021 shows kangaroos in thick fog in Canberra, Australia.

Photo taken on Aug. 15, 2021 shows the National Library of Australia in thick fog in Canberra, Australia.