Photo taken on Dec. 3, 2014 shows the Christmas tree with all the lights lit up during the 82nd Christmas Tree Lighting Ceremony in Rockefeller Center in New York, the United States. Thousands of people witnessed the lighting of 45,000 multi-colored, energy efficient LED on the 85-foot-tall, 90-year-old Norway Spruce, which is topped with a spectacular Swarovski crystal star in Rockefeller center on Wednesday. The Rockefeller Center has held the Christmas tree lighting ceremony annually to greet the upcoming Christmas since 1933. (Xinhua/Qin Lang)