China's participation in the Group of 20 (G20) Summit in Germany cemented its role as a world leader that advocates globalization and multilateralism, Brazilian expert Ronnie Lins told Xinhua in a recent interview.

Chinese President Xi Jinping has called on the world's leading economies to promote multilateral trade and inclusive global economy during his speech at the G20 summit, said Ronnie Lins, director of the China-Brazil Center for Research and Business.

China reaffirmed its willingness to work with other countries to jointly tackle major global issues, he said.

Countries can barely resolve issues, such as global warming, the refugee crisis and environmental degradation, successfully on their own, Lins said.

"So, the key to success will be multilateralism, as the Chinese president proposed. All countries need to jointly resolve these problems," he added.

Meanwhile, the Belt and Road Initiative which China underlined at the G20 summit will help promote the development of the world's leading economies in the future, he said.

The Belt and Road Initiative, which comprises the Silk Road Economic Belt and the 21st Century Maritime Silk Road, was brought up by Chinese President Xi Jinping in 2013, with an aim to build a trade and infrastructure network connecting Asia with Europe and Africa along the ancient Silk Road routes.

"Within the framework of the initiative, China is strengthening cross-border trade and bolstering ties with its neighbors, which will benefit both sides," Lins said.

"The initiative which helps establish such relations involves large infrastructure projects, in which China has more experience than any other countries in the world," he said.

In addition, close bilateral ties "strategically create a very powerful relationship that makes it easier to protect sovereignty and regional stability," he added.

China is increasing investment in technological innovation which is key to solving major concerns of countries participating in the G20 summit, such as global economic recovery and climate change, he said.

Establishing win-win cooperation will promote inclusive world economic growth, Lins said.

"Today, we are witnessing rising protectionism in many countries, which may spread to more countries. So it is important for countries to have open trade and closer ties," he added.