China and Argentina, two of the world's major emerging economies, should enhance coordination on international affairs and jointly face global challenges, Chinese ambassador Zeng Gang said Thursday.

Reforms on international political and economic systems were of vital importance to all countries, Zeng said at a seminar on Sino-Argentine relations here.

Zeng said China and Argentina, which had many similarities, should coordinate actions on such global issues as UN reform, world financial system reform and fighting climate change among others, in a bid to protect their common interests and seek new global economic and political orders in favor of developing nations.

The two countries should strengthen high-level exchanges and boost strategic mutual trust, said the ambassador, adding China is expecting Argentine President Cristina Fernandez's upcoming visit this year.

Meanwhile, the two countries should promote pragmatic cooperation, enrich bilateral relations and expand investments, he said.

The two countries had been important trading partners; however, there was still great potential in bilateral economic cooperation, Zeng said, noting the two were currently negotiating on railway and subway infrastructure projects and China was willing to expand investment in energy and mining in Argentina.