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The lit-up 55-foot tall Blue Spruce is seen during the 106th annual Christmas tree lighting ceremony at the Millennium Park in Chicago, the United States, Nov. 22, 2019. (Photo by Joel Lerner/Xinhua)
The lit-up 55-foot tall Blue Spruce is seen during the 106th annual Christmas tree lighting ceremony at the Millennium Park in Chicago, the United States, Nov. 22, 2019. (Photo by Joel Lerner/Xinhua)