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In recent years, China has put in place a slew of policies and measures to protect arable land, but there are still illegal occupations of arable land in some localities.

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.

Both sides should deepen cooperation in environmental technology, circular economy, clean energy, sustainable finance and other areas, and strengthen cooperation in information and communication technology, artificial intelligence, e-commerce, big data, cloud computing and other fields, so as to expand new growth areas for bilateral cooperation.

The country also shortened the negative list for foreign investment in the 2020 version in late June.

"Tianwen-1 -- 'quest for heavenly truth' -- consists of not only an orbiter, but also a lander and a rover, a trifecta no other nation has accomplished on its first Mars bid," said the Science article.