"We firmly believe that we can work with China to promote sustainable development of infrastructure and share the cooperation opportunities brought by new infrastructure projects," she noted, adding that cooperation between China and Portuguese-speaking countries can focus on a more comprehensive investment strategy to promote people's well-being and global prosperity.

Fang Qiuchen, chairman of the China International Contractors Association, said that infrastructure has always been a key area of cooperation between China and Portuguese-speaking countries.

Over the years, the two sides have actively cooperated in fields such as transportation, communications, water conservancy and electricity, promoting hard connectivity of infrastructure, soft connectivity of rules and standards, and heart-to-heart connectivity with the people of Portuguese-speaking countries, he added.

Zhang Qingwei, deputy director of the Department of Commerce of Shandong Province, said Shandong is one of the provinces with the strongest infrastructure construction in China. Over the years, the province has actively promoted the high-quality integration of powerful enterprises into the Belt and Road Initiative, he added.

Shandong is willing to further strengthen economic and trade cooperation and exchanges with Portuguese-speaking countries, share new ideas, technologies and products for Shandong's green and low-carbon transformation and development, actively participate in the construction of green infrastructure in these countries, promote green and low-carbon development, and achieve a higher level of mutual benefit and win-win results, Zhang said.

He added, "The cooperation between Shandong and Portuguese-speaking countries will surely bear more fruits and reach a new level."