A New Year's Eve notice is seen in Sydney, Australia, on Dec. 31, 2020. Australia's New Year's Eve celebrations have been hampered by fresh COVID-19 cases in Sydney and Melbourne, with the public urged to spend the occasion at home. (Photos: Xinhua)

Tumbalong Park is seen in Sydney, Australia, on Dec. 30, 2020. Australia's New Year's Eve celebrations have been hampered by fresh COVID-19 cases in Sydney and Melbourne, with the public urged to spend the occasion at home.

A New Year's Eve notice is seen in Sydney, Australia, on Dec. 31, 2020. Australia's New Year's Eve celebrations have been hampered by fresh COVID-19 cases in Sydney and Melbourne, with the public urged to spend the occasion at home.

A man walks at opposite bank of Sydney Opera House in Sydney, Australia, on Dec. 31, 2020. Australia's New Year's Eve celebrations have been hampered by fresh COVID-19 cases in Sydney and Melbourne, with the public urged to spend the occasion at home.

A security staff works in Sydney, Australia, on Dec. 31, 2020. Australia's New Year's Eve celebrations have been hampered by fresh COVID-19 cases in Sydney and Melbourne, with the public urged to spend the occasion at home.