Expectations are high in African nations for the upcoming Forum on China-Africa Cooperation in Johannesburg on December 4th and 5th.As Africa's biggest trading partner and a major sponsor of projects throughout the continent, China is to continue assistance and cooperation.The action is under the name and principle of "Teaching one to fish is better than giving him fish".For now, Chinese President Xi Jinping is in Zimbabwe on the first stop of his Africa tour, which will later take him to South Africa.So what's the significance of this visit?And where do Sino-African relations stand now?