The Peace Research Institute Oslo posted on 17 September 2022 a commentary titled "Russia and China Ambiguity Alliance in Africa" by Vamo Soko and Bintu Zahara Sakor.
Russia is trying to increase its geopolitical influence and maximize its economic gain in Africa. Its strategy is opportunistic and calculating. China is expanding its economic engagement with Africa while French influence is in decline.
Comment: In spite of the title of the commentary, the authors don't tell us whether there is any collaboration between China and Russia in Africa.