(250904) -- KIGALI, Sept. 4, 2025 (Xinhua) -- Rwandan President Paul Kagame (4th L) watches an aircraft demonstration at EHang booth during the 9th Aviation Africa Summit and Exhibition in Kigali, Rwanda, on Sept.4, 2025. The ninth edition of the Aviation Africa Summit and Exhibition opened Thursday in Kigali, the capital of Rwanda, with a call for countries to open up Africa's skies and invest in a strong and more dynamic aviation sector. (Photo by Cyril Ndegeya/Xinhua)