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Chongqing should play a key role in advancing the large-scale development of the western region, promoting the joint construction of the Belt and Road Initiative and the green development of the Yangtze River Economic Belt.

Efforts should be made to conserve water and ensure project quality, Li said, adding that the comparison and selection of plans for the western route of the project should be carried out.

By 2022, China aims to have an optimized trade structure and a notable improvement in trade efficiency, and set up an evaluation system for high-quality trade development, according to the document.

BEIJING, Dec. 10 (Xinhua) -- China, the world's largest developing economy, has generally sailed through a challenging year marked by trade tensions and weak demand among others.

-- Upholding and improving China's basic socialist economic system and promoting the high-quality development of the economy;