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Yang Jiechi, a member of the Political Bureau of the Communist Party of China (CPC) Central Committee and director of the Office of the Foreign Affairs Commission of the CPC Central Committee, reads a congratulatory letter sent by President Xi Jinping to the 3rd Understanding China Conference at the opening ceremony of the conference in Beijing, capital of China, Dec. 16, 2018. Yang also delivered a speech at the opening ceremony. (Xinhua/Zhang Ling)