The World Conference on Science Literacy 2018 opens in Beijing, capital of China, Sept. 17, 2018. Wang Huning, a member of the Standing Committee of the Political Bureau of the Communist Party of China (CPC) Central Committee and a member of the Secretariat of the CPC Central Committee, read Chinese President Xi Jinping's congratulatory letter at the conference's opening ceremony and delivered a speech. [Photo/Xinhua]