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In addition, the president urged the CAST to better serve scientists and help raise people's scientific literacy.

David Dollar, a senior fellow at the Brookings Institution and a former official of the U.S. Treasury Department, said it's very important for both sides to have "a frank conversation about macroeconomic and financial policies" this year, as the Federal Reserve weighs its next interest rate hike in coming months.

Ban's China tour lasts from Wednesday to Sunday and will also take him to Hangzhou and Suzhou in southern China.

For his part, Lukashenko said Belarus has always been China's reliable friend and he is happy to see that both sides have rendered support to each other on their respective major concerns.

Scientists also expect breakthroughs on pulsars, the highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. So far more than 2,000 pulsars have been detected.