China's finance minister and leading economists on Sunday voiced concerns about Britain's vote to leave the European Union, with the policymaker saying it has heightened market uncertainty, though some expect a limited impact on the Chinese economy.

The Brexit decision "will cast a shadow over the global economy. ... The repercussions and fallout will emerge in the next five to 10 years," said Lou Jiwei, China's Minister of Finance, at the first annual meeting of the Asian Infrastructure Investment Bank in Beijing.

"It's difficult to predict now," he said. "The knee-jerk reaction from the market is probably a bit excessive and needs to calm down and take an objective view."