A sales lady gives a shopping bag to her customer at the Macy's flagship store during Black Friday sales in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People walk past a Black Friday sales poster in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People do shopping at the Macy's flagship store for Black Friday sales in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People pick bags for Black Friday sales at the Macy's flagship store in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People do shopping at the Macy's flagship store for Black Friday sales in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People pick bags for Black Friday sales at the Macy's flagship store in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People pick bags for Black Friday sales at the Macy's flagship store in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People pick shoes for Black Friday sales at the Macy's flagship store in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua

People wait to enter the Macy's flagship store for Black Friday sales in New York, the United States, Nov. 28, 2019. The annual shopping season starts as the Thanksgiving Day arrives. Photo:Xinhua