Chinese Premier Li Keqiang (L) and his wife Cheng Hong wave before leaving in Addis Ababa, Ethiopia, May 6, 2014. Premier Li Keqiang concluded his visit to Ethiopia and the headquarters of the African Union on Tuesday. (Xinhua/Li Tao)

　　Chinese Premier Li Keqiang (L front) hugs his Ethiopian counterpart Hailemariam Desalegn (R front) during a farewell ceremony in Addis Ababa, Ethiopia, May 6, 2014. Premier Li Keqiang concluded his visit to Ethiopia and the headquarters of the African Union on Tuesday. (Xinhua/Li Xueren)

　　Chinese Premier Li Keqiang (L front) attends a farewell ceremony held by his Ethiopian counterpart Hailemariam Desalegn (R front) in Addis Ababa, Ethiopia, May 6, 2014. Premier Li Keqiang concluded his visit to Ethiopia and the headquarters of the African Union on Tuesday. (Xinhua/Li Xueren)