The mission would be launched this summer for a trip to the sun's atmosphere about 4 million miles (6.4 million km) from the surface to study how the star affects space and other planets.
That will undoubtedly improve the well-being of the friendly Russian and Chinese people and promote the security and stability of Eurasia and the world at large, Putin added.
Over the past thousands of years, the Chinese people have been united and stuck together through thick and thin, built a united country with various nationalities, developed harmonious relationships between 56 diverse and interwoven ethnic groups and formed a big Chinese family where they keep watch for and help defend each other, Xi said.
Georgian President Giorgi Margvelashvili said Xi's brilliant leadership will surely bring greater development and benefits to the Chinese nation, and the traditional friendship and cooperation between Georgia and China will be further deepened.
Thanking China for its long-term support and help, Barrow said Gambia looks forward to continued help from China.
As to the venue of the Trump-Kim summit, Trump said the US is weighing five different locations, but none are located in the US.