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"A slew of regional multilateral economic, political, and security issues have compelled China and South Korea to maintain frequent communication and cooperation," he said.

Zhang hoped that the two sides will jointly implement these cooperative projects to ensure that they will play an important role in promoting economic development and social progress in Laos.

The three countries also promised to strengthen cooperation on disaster prevention and relief capabilities.

National laboratories have become important channels for developed countries to contend for the high ground of science and innovation, Xi said, citing the Argonne National Laboratory of the United States and the Helmholtz center in Germany as examples.

AMMAN, Nov. 17 (Xinhua) -- China believes political solutions are key to resolving issues and conflicts in the Middle East, the Chinese special envoy to the region said in the Jordanian capital on Tuesday.