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"Having many scattered markets has long been an important factor that makes it difficult for traders and investors to expand their business on the African continent, and hinders the economic development of Africa," he said.

"Financial technology is at core of our work at the current stage … We are trying hard to learn from fintech companies in terms of infrastructure construction, the integration of information technology and banking business, the building of innovation mechanisms, and the restructuring of human resources to hire more talents specialized in digital and information technologies," said Chen at a news conference in Beijing.

"Gravity survey bridges traditional and modern surveying and mapping technology. With it, scientists can better analyze data collected via the two measurements and get an even more precise result," he said.

"For them, if they're not close to a subway or bus, this creates potentially a very big obstacle," William Eimicke, a professor of public affairs at Columbia University, told China Daily.

"Great friends are bound to have disagreements," Pompeo told reporters after meeting with Jaishankar. "The United States has been clear we seek greater market access and the removal of trade barriers."