People ride a boat on the Potomac River in Washington D.C., the United States, on June 14, 2020. (Photo by Ting Shen/Xinhua)

People lounge at Georgetown Waterfront Park in Washington D.C., the United States, on June 14, 2020. (Photo by Ting Shen/Xinhua)

A man wearing a face mask stands on a street in the Georgetown neighborhood in Washington D.C., the United States, on June 14, 2020. (Photo by Ting Shen/Xinhua)

A store remains closed due to citywide shutdown amid the COVID-19 pandemic in Washington D.C., the United States, on June 14, 2020. (Photo by Ting Shen/Xinhua)

People lounge at Georgetown Waterfront Park in Washington D.C., the United States, on June 14, 2020. (Photo by Ting Shen/Xinhua)

People lounge at Georgetown Waterfront Park in Washington D.C., the United States, on June 14, 2020. (Photo by Ting Shen/Xinhua)