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The two sides have also firmly supported multilateralism, played a leading role in international anti-epidemic cooperation, firmly fought against political viruses, and jointly safeguarded global and regional security and stability, he added.

Launched on Nov. 24, Chang'e-5 is one of the most complicated and challenging missions in China's aerospace history, as well as the world's first moon-sample mission for more than 40 years.

The program, which aims to bring down the pricing by large-scale purchasing and squeezing out multiple layers of agent middlemen, owes its origin to Sanming, an industrial city with a permanent population of 2.6 million in east China's Fujian Province.

The pilot, to last till the end of 2022, aims to accumulate experience for similar practices to be implemented across China, it said.

Xi attaches great importance to ecological conservation and environmental protection. A sound ecological environment is a basic foundation for the sustainable development of humanity and society, he says.