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China will work with all countries in enhancing the protection of intellectual property rights and actively promote the development of digital economy and sharing economy, Xi said.

"Hong Kong is part of the big family. We are closely related to our compatriots in Hong Kong. It is the fine tradition of the Chinese people that one side is in trouble and all sides come to help. We are duty-bound to support Hong Kong in fighting the epidemic," said Li Dachuan, chief leader of the support team.

Xi wrote back to Tedros and Bill Gates and exchanged letters with Argentine President Alberto Fernandez, Peruvian President Martin Vizcarra, Cambodian Prime Minister Samdech Techo Hun Sen and Mongolian Prime Minister Ukhnaa Khurelsukh.

According to statistics, China-U.S. economic and trade relations support 2.6 million American jobs, and over 72,500 U.S. companies have investments or business in China. In multilateral fora, China-U.S. cooperation has benefited the two countries and the world, from handling regional hotspots to addressing global issues like counter-terrorism and non-proliferation.

Xi expressed the hope that the EU will keep its trade and investment market open, foster an open, fair, just and non-discriminatory business environment and protect the legitimate rights and interests of Chinese companies.