Chinese President Hu Jintao and U.S. President Barack Obama spoke on Tuesday of shared responsibilities and economic opportunities after talks in Beijing. Trade, nuclear proliferation and other issues were all addressed during their session. The two leaders "talked about continuing to build a positive, cooperative and comprehensive relationship between our nations," according to Obama, who said he welcomes China"s desire for a greater role in world affairs. "China and the United States share extensive common interests and broad prospects for cooperation on a series of major issues important to mankind"s peace and stability and development, Hu said. He noted that the economy, climate change and cultural exchanges were among those issues, according to a report of CNN. The U.S. delegation was met by an honor guard at the Great Hall of the People, and Obama shook hands with Hu and other top Chinese officials before the two leaders went behind closed doors. It is their fifth meeting in the past year, and they made no public statements beforehand. On economic and trade issues, Hu called for Beijing and Washington to build a positive relationship in the 21st century, a partnership. "Our two countries need to oppose and reject protectionism and all its manifestations," Hu said.