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"China's foreign trade structure was also optimized," Liang said.

"China's e-commerce grew because it believed in the entrepreneurs," said Ma, adding that "first innovation, and then policies to facilitate entrepreneurism."

"China, the greatest online retail player in the world, can represent a great opportunity for those European companies who are willing to serve the country's growing middle-class consumers."

"Compared to new homes, the secondary market can serve as a better reference. Especially in first-tier and major second-tier cities, where transactions of pre-owned homes account for more than half of their total trading, the figure has surpassed 80 percent in Beijing and Shanghai," said Zhang.

"Countries, while maintaining their own security, should take into account other countries' security," Xi said. He asked major nations to offer more support for underdeveloped countries and regions in security and development.