People enjoy the lighted huge Christmas tree at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Children enjoy the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Christmas trees are seen at Vendome Palace in Paris, France, Nov. 19, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Children enjoy the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

People take photos of the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Children enjoy the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

A boy enjoys the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

A boy enjoys the Christmas window at Printemps department store in Paris, France, Nov. 14, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

People take selfies with a Christmas window at Printemps department store in Paris, France, Nov. 14, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

A girl enjoys the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 14, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Children enjoy the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Children enjoy the Christmas window at Printemps department store in Paris, France, Nov. 14, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

A girl enjoys the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 24, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

A girl enjoys the Christmas window at Galeries Lafayette department store in Paris, France, Nov. 14, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)

Christmas decorations are seen at a department store in Paris, France, Nov. 26, 2019. The city of Paris is decorated with Christmas trees and decorations for the festival season. (Xinhua/Gao Jing)