Amina Mohamed (5th L), cabinet secretary of the Ministry of Education, Science and Technology of Kenya, and Bai Chunli (4th L), president of Chinese Academy of Sciences, pose for a photo after signing a memorandum of understanding (MOU) on the Sino-Africa Joint Research Center (SAJOREC) in Nairobi, Kenya, on Dec. 13, 2018. Kenya's education ministry and China's top scientific think-tank on Thursday in Nairobi signed an MOU to promote cooperation in the areas of science, research and innovation. (Xinhua/Li Yan)