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"Changes do happen. More people in Hong Kong can now speak Mandarin. Exchange activities also have increased significantly, especially among young people," Tung said. "The region's major trade partners also turned from the United States and European countries to the mainland."

"China is one of the most active countries in the research and application of graphene, and Shenzhen is the most innovative and dynamic place in China. Here, the whole innovation environment and industry development trend make me more willing to participate," said Andre Geim, winner of 2010 Nobel Prize in Physics.

"China believes that trade problems and conflicts should be dealt with in a positive and mutually beneficial manner," said Sang Baichuan, director of the Institute of International Business at the University of International Business and Economics in Beijing.

"China and Russia are friendly neighbors," he said. "The bilateral economic and trade exchanges are increasingly close. The courier service in China is so fast, which always makes me euphoric. I want to introduce China's fast courier service to Russia one day, as well as more quality Chinese products."

"China has benefited greatly from opening-up in the past 40 years. We therefore will keep opening up," said Xie.