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China must improve innovation capabilities for key and core technologies and keep a firm hold on the initiative in the development of science and technology to offer a strong technological guarantee for China's development, Xi pointed out.

China is willing to work with India on the basis of the Five Principles of Peaceful Coexistence to improve political mutual trust, promote mutually beneficial cooperation, and push Sino-Indian ties along the right track, he said.

China reported nearly 800,000 new cases of lung cancer each year, accounting for roughly 21 percent of the total new cancer cases.

China should join together with Japan, South Korea, and other countries that have suppressed the virus to support other countries, especially in Africa and Asia, to do the same, Sachs said. "That will speed the return to global sustainable development."

China is willing to work with Russia and other countries to safeguard fundamental principles of the World Trade Organization and free trade, and promote multilateralism, Li said. China would like to further coordinate the BRI with the union and welcomes other countries to join in and build an open cooperation platform, he said.