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"Close to 2,000 exhibitors will present about 1 million books at the book expo and over 500 cultural activities will be held," he noted.

"China's population is aging rapidly. The elderly need to be cared for, and yet their children are often busy with work," Wang said. "We see a big market potential."

"China's e-commerce has been a duopoly market for years. Against everyone's expectation, there came Pinduoduo, emerging with a completely different set of practices to engage with users," said Keso Hong, an independent internet commentator in China.

"China will also deepen international cooperation to fuel the development of the global digital economy and build a community of common destiny in cyberspace," Chen said.

"China-Russia ties are mature and stable, and are secure against changes of the external environment," Hua told a daily news conference.