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Over the past 30 years, "the two countries have made great headway in cooperation in economy, trade and investment," he said.

He called for multidisciplinary scientific research, highlighting the theoretical research on source of infection, transmission and pathogenesis to help produce more targeted and practical guidelines for COVID-19 prevention and control after work and production resume.

"What they ... are desperately trying to do is to cover up their own incompetence and failure to act in time," Cusack said, adding that the White House "clearly dropped the ball for two long months -- January and February -- before anything was said or put into motion."

Hangzhou's City Brain project was launched in 2016 to help the city make plans in areas including public security, transport and healthcare with the use of big data, cloud computing and artificial intelligence, among other cutting-edge technologies.

Zhao said China had been closely following the development of the COVID-19 epidemic around the world, with the determination to boost international cooperation, and the vision of a community with a shared future for humanity.