Photo taken on Nov. 23, 2020 shows the Smithsonian Institution Building in Washington D.C., the United States. The Smithsonian Institution temporarily closes all its museums and the National Zoo beginning on November 23 due to the rising number of Covid-19 cases across DC and nationwide. (Photo/China News Service)
Photo taken on Nov. 23, 2020 shows a notice of closure in front of of National Air and Space Museum in Washington D.C., the United States. The Smithsonian Institution temporarily closes all its museums and the National Zoo beginning on November 23 due to the rising number of Covid-19 cases across DC and nationwide. (Photo/China News Service)
Photo taken on Nov. 23, 2020 shows a notice of closure in front of the National Gallery of Art in Washington D.C., the United States. The Smithsonian Institution temporarily closes all its museums and the National Zoo beginning on November 23 due to the rising number of Covid-19 cases across DC and nationwide. (Photo/China News Service)
Photo taken on Nov. 23, 2020 shows a statue in the closed National Mall in Washington D.C., the United States. The Smithsonian Institution temporarily closes all its museums and the National Zoo beginning on November 23 due to the rising number of Covid-19 cases across DC and nationwide. (Photo/China News Service)
