Photo taken on Feb. 3, 2020 on a flight shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke. (Photos: Xinhua)

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke. (Photo by Chu Chen/Xinhua)

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.

Photo taken on Feb. 3, 2020 in the Canberra airport shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.

Photo taken on Feb. 3, 2020 shows smoke from the bushfire burning in the south of the Australian Capital Territory (ACT) moves to blanket the Australian capital Canberra. Authorities have declared a bushfire state of emergency in the ACT on Jan. 31. Canberra is shrouded in smoke.