From ISN Security Watch (link):
“Business is business. We try to separate politics from business. Secondly I think the internal situation in the Sudan is an internal affair, and we are not in a position to impose upon them,” Chinese Deputy Foreign Minister Zhou Wenzhong said in an interview with the New York Times on 22 August 2005.
In the Mao era, China dealt with Africa as part of a show of solidarity with countries that shared some of China’s experience of Western oppression. However, these links were fostered in an ideologically charged time, when China sought to display affinity with other socialist countries and to demonstrate an almost nihilistic aversion to the institutions and norms of international relations. Although it joined the UN in 1971, any real alteration of China’s foreign policy did not come until the Deng-initiated reforms post-1979.
Even then reform was piecemeal and cautious, predicated on careful changes to China’s domestic political economy, which allowed for marketization of the economy while retaining a totalitarian state. According to Christopher Alden, senior lecturer in International Relations at the London School of Economics, in an article for YaleGlobal magazine, China’s foreign policy changed in 1993 when it shifted from being an oil exporter to being an oil importer.
See also China’s Rising Role in Africa by Princeton N. Lyman, and Leveraging the Dragon: Toward “An Africa That Can Say No” by Christopher Alden