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Liu said maintaining national integrity and strengthening unity among different ethnic groups are the focuses of work in Tibet. He called for more publicity for the central authority's policies in Tibet, and for education on ethnic unity.

The Sudanese parliament on Wednesday declared its support for China's call to resolve the South China Sea dispute through dialogue.

In the name of "freedom of navigation or overflight," Washington repeatedly shows its force as a global sheriff, neglecting the fact that the South China Sea had enjoyed decades of peace and commercial prosperity before the 1970s.

There are more than 220 million people aged at 60 or older in China, 16 percent of the total population.

Xi recalled that in January 1956, Mao Zedong and other state leaders heard reports from chief CAS scientists on sci-tech development at home and abroad, and then the CPC Central Committee initiated the call of "marching toward science."