Premier Li Keqiang and his wife, Cheng Hong (second from left), who are on a tour of Africa, attend an exhibition featuring China's most advanced railway and aviation technologies with Nkosazana Dlamini-Zuma (left), who chairs the African Union Commission, and Ethiopian Prime Minister Hailemariam Desalegn (right) at AU headquarters in Addis Ababa on Monday. Li Xueren / Xinhua
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