A tourist walks past the Sydney Opera House in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)

The dining zone of the Sydney Opera House is closed in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)

Tourists are seen near the Sydney Harbour Bridge in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)

Tourists are seen near the Sydney Harbour Bridge in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)

Tourists are seen near the Sydney Harbour Bridge in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)

A tourist walks past the Sydney Opera House in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)

Tourists rest at a cafe on a dock in Sydney, Australia, Sept. 1, 2020. Tourism in Australia has been heavily impacted by the COVID-19 pandemic. (Xinhua/Hu Jingchen)