premise: Chinese President Hu Jintao rolled out red carpet on Friday morning at the Great Hall of the People in downtown Beijing, to welcome five presidents of African countries, who were here for a two-day China-Africa summit.
  Hu met, on separate occasions, with five African presidents, including Denis Sassou-Nguesso of the Republic of Congo, Yoweri Museveni of Uganda, Alhaji Ahmed Tejan Kabbah of Sierra Leone, Paul Kagame of Rwanda and John Agyekum Kufuor of Ghana.
  Hu extolled the upcoming Beijing Summit of the Forum on China- Africa Cooperation (FOCAC), saying it is a great undertaking in the history of China-Africa relations.
  At the two-day summit slated for Nov. 4-5, leaders of China and African countries will review the development of China-Africa relationship and blueprint the future cooperation, Hu said.
  The Chinese president said the summit will have a significant impact on enhancing mutual understanding and trust between China and African leaders, deepening traditional friendship, bolstering pragmatic cooperation and promoting South-South cooperation.
   What are the impacts of this summit to China-Africa relationship?
hypothesis: promoting South-South cooperation