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"But we need governments, international financial institutions, and the private sector to work with us to take full advantage of these advances," he said, listing four ways philanthropic capital can be used.

"China is now becoming a country that's more of an innovator rather a country that relies on the technology of other nations, so that is a very good sign," said Edwin Maher, a visiting professor of journalism studies at the Communication University of China.

"China is united and determined to improve air quality and protect the environment," said Jiang Yi, a professor at Tsinghua University and an academician at the Chinese Academy of Engineering.

"China hopes, its seems, to play a critical role in ensuring that the talks between Trump and Kim will reach a satisfactory agreement and to avoid a failure of the talks in May that might in turn increase the risk of military action," said John Nilsson-Wright, a senior research fellow for Northeast Asia at the think tank Chatham House.

"But such merits are selectively ignored in many debates," Ban said, adding that he hopes Asian countries and business leaders can work together in the context when the world is facing such long-term challenges and near-term uncertainties, so as to give hope to the world and become a global growth engine.