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"Expertise of Chinese scientists in rice breeding and cultivation is a tremendous resource for the developing world," he said. "I believe it will continue to have an impact for years to come."

"During the past seven decades, typhoons in Liaoning were mostly 'secondhand', which means they landed in other areas before arriving in the province, and weakened during the first landfall," Zhang said.

"Disputes regarding the accuracy of documents are generally questions of fact to be decided by the jury," they said.

"Facing a complicated and grim international situation and severe global economic recession, global trade and investment continues to be at a low ebb," Tang said.

"Demand is set to decline by amounts never before seen driven by the COVID-19 global economic shock," Kurt Hallead, co-director of RBC's global energy research unit told CNBC.