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Hassan Ahmadian, assistant professor of Middle East and North Africa studies at the University of Tehran, said China's donations and exchange of expertise with affected countries, including Iran, stand out not only as a humanitarian gesture but also as responsible behavior on the part of a major country.

This is in line with the public interest, Hong Kong's actual situation and international standards, the statement said, urging the public to support the HKSAR government in combating the COVID-19 pandemic, to protect the lives, safety and health of Hong Kong people, and to ensure the steady and sustainable development of "one country, two systems."

Xi stressed focusing on the keywords of integration and high quality to push forward integrated development of the delta. Integrated approach and measures should be taken to break administrative barriers, enhance policy coordination, and enable the smooth flow of production factors on a larger scale.

To forge new advantages in international cooperation and competition, China will need to promote high-quality development driven by reform and opening-up, while improving weak links and leveraging strengths to meet challenges, said Guan Tao, chief economist with BOC International.

"As with many Mars missions, Tianwen-1 is about learning more about the Red Planet and, through that, for scientists to learn more about our own planet," the DW added.