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The premier said China must rely on scientific and technological innovation to improve the overall quality of its economy, move upward in the industrial value chain, foster a new competitive edge, overcome restraints in resources and the environment, and achieve more sustainable development.

Praising the results of the mission, Zhang stressed that scientific research on the polar regions aims to deepen understanding of Earth climates and environments, expand living space, utilize polar resources and boost human society's sustainable development.

SOCHI, Russia, Feb. 6 (Xinhua) -- Chinese President Xi Jinping and his Russian counterpart, Vladimir Putin, on Thursday jointly held a video talk with naval commanders aboard their countries' warships escorting the shipments of Syrian chemical weapons.

The Czech Republic reaffirmed its adherence to the one-China policy and stressed that Tibet is an inalienable part of Chinese territory, it said.

The South Korean expert also noted that Xi's trip to Sochi showed to the world the Chinese leader's image of an amicable person, as well as the new Chinese leadership's determination to strengthen communications and establish friendly relations with various countries in the world.