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It summarized the notable strengths of China's state and governance systems in 13 aspects, and called for efforts to better turn institutional strength into effective governance.

Addressing a photo exhibition to mark the 20th anniversary of Macao's return to China at the United Nations (UN)'s Geneva headquarters, China's Permanent Representative to the UN Office at Geneva Chen Xu said that the exhibition will give visitors a fresh look at Macao's dramatic changes and development.

The science and technology innovation board and the pilot registration system must stay committed to their roles, and the quality of listed firms should be improved, Xi said.

"We will adhere to the principle of common but differentiated responsibilities, encourage more countries to cooperate in combating climate change with full and thorough implementation of the Paris Agreement," the Chinese president said.

Xi called local workers as important participants in and contributors to jointly building the Belt and Road as they have helped the Piraeus Port develop well, and wished them success at work and a happy life.