The headquarters building of the European Commission is seen through Christmas decorations at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

People view Christmas decorations at Schuman Square in Brussels, Belgium, Dec. 7, 2020. (Xinhua/Zhang Cheng)

The headquarters building of the European Commission is seen through Christmas decorations at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

The headquarters building of the European Commission is seen through Christmas decorations at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 8, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 7, 2020. (Xinhua/Zhang Cheng)

Christmas decorations are seen at Schuman Square in Brussels, Belgium, Dec. 7, 2020. (Xinhua/Zhang Cheng)