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"Chasing and intercepting high-speed boats requires highly specialized skills, and is also very dangerous," Worrall said. "But I've never been overtaken."

"China is now among the major sources of finance for infrastructure development globally, and Africa has had the access to more than 0 billion in the last 20 years," he said.

"CASME used to be a grassroots association seldom participating in international activities. However, since the first half of last year, especially since May this year when the Belt and Road Forum for International Cooperation was held, more associations like CASME in countries such as United States, Russia and Singapore have contacted us for cooperation," said Ren Xinglei, senior vice-chairman of CASME, in Beijing Thursday.

"COMAC's 256 leading suppliers come from 14 countries and regions, and our partners include leading aviation institutes and enterprises such as GE Co and Fokker Technologies Holding BV, and its OEMs including Airbus, Boeing and Bombardier Inc," said He from COMAC.

"Chen is my classmate. I'm so sad and angry that we have lost such a young life. How can people commit such vicious crimes?" wrote one WeChat user.