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"Compared with other first-tier cities like Beijing, Shanghai and Guangzhou, Shenzhen has a big population with relatively little land," said Guo Wanda, who works with the China Development Institute based in Shenzhen. "This is part of the reason why skyscrapers offer a solution to the problem."

"Chinese companies used to lag far behind multinational pharmaceutical companies in vaccine development and production, but have been gaining ground fast in the past few years," Shi said.

"Controlling a camera drone with hand movements alone is a major step toward making aerial technology an intuitive part of everyone's daily life, from work and adventure to moments with friends and family," said Paul Pan, senior product manager at DJI.

"Correcting one's mistakes is a fundamental basis for one to behave and do business," Chinese Foreign Ministry spokesperson Geng Shuang said Wednesday at a daily press briefing.

"China's competitive advantage in attracting foreign investment has not changed,” Zong said, adding most global companies' confidence and strategy in investing in China have not changed too.