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Noting that the Pacific island countries are all developing countries, Zheng said Xi's visit will cement the friendship between China and developing countries and inject strong impetus into the building of a community with a shared future for humanity.

U.S. National Security Adviser John Bolton rolled out the Trump administration's new Africa strategy on Thursday, using a hostile and competitive tone against countries like Russia and China.

"China has accelerated energy restructure and built a clean, low-carbon, safe and efficient energy system, while Arab countries actively seek energy transformation and changing the situation of relying on fossil energy," said Liu.

"Holding China-Russia energy business forum is an important consensus reached between President Putin and myself, with a goal to facilitate direct dialogue between companies from both sides, extensively explore cooperation opportunities and accurately synergize cooperation demand," Xi stressed.

The coming years will see closer space cooperation between China and European countries. China's Chang'e-4 lunar probe, set to be launched in December this year and expected to become the first probe to soft-land on the far side of the moon, will carry detectors from Germany and Sweden. A Sino-European joint mission, the Solar wind Magnetosphere Ionosphere Link Explorer, will be launched in 2021.