Aerial photo taken on Aug. 15, 2019 shows the Dianchi International Convention & Exhibition Center in Kunming, southwest China's Yunnan Province. As the provincial capital of Yunnan, Kunming is not only a transport and information hub, but also a regional center for political, economic, cultural, educational, scientific research and social services affairs. The city's mild climates allow fresh flowers and lush greens to grow all year round, making it a pleasant place to visit and live in. (Xinhua/Zhang Fan)