A staff member introduces the National Stadium (the Bird's Nest) to journalists in Beijing, capital of China, Sept. 24, 2019. A total of 103 journalists from 82 overseas medias, who came to cover events for the celebration of the 70th founding anniversary of the People's Republic of China, visited some venues for the 2022 Beijing Winter Olympic Games in Beijing on Tuesday. (Xinhua/Ren Chao)