Staff members prepare materials to be displayed at the Cultural Exhibition Area of the Media Center for the second Belt and Road Forum for International Cooperation in Beijing, capital of China, on April 23, 2019. The media center started trial operation at the China National Convention Center in Beijing on Tuesday. More than 4,100 journalists, including 1,600 from overseas, have registered to cover the second Belt and Road Forum for International Cooperation to be held from April 25 to 27 in Beijing. [Photo/Xinhua]