An aerial photo taken on July 25, 2015 shows the Weishui Wetland of Fotang Sewage Treatment Plant in Yiwu, east China's Zhejiang Province. (Xinhua/Lyu Bin)

An aerial photo taken on Oct. 4, 2015 shows the night view of Lujiazui Area in Shanghai, east China. (Xinhua)

An aerial photo taken on Aug. 25, 2015 shows the Bagua Lake in Nitu Village of Binhai Township in Wenling City, east China's Zhejiang Province. (Xinhua/Liu Zhenqing)

An aerial photo taken on Oct. 9, 2015 shows the Disney Park in Shanghai, east China. (Xinhua/Zhu Yushuai)

An aerial photo taken on Sept. 16, 2015 shows the paddy field in Guiwu Township of Xuyi County in Huai'an City, east China's Jiangsu Province. (Xinhua/Zhou Haijun)

An aerial photo taken on Oct. 9, 2015 shows the Disney Park in Shanghai, east China. (Xinhua/Zhu Yushuai)

An aerial photo taken on Oct. 23, 2015 shows the National Convention and Exhibition Center in Shanghai, east China. (Xinhua/Xiong Lili)

An aerial photo taken on Oct. 26, 2015 shows the scenery of paddy field in Yangzhou, east China's Jiangsu Province. (Xinhua/Meng Delong)

An aerial photo taken on Nov. 16, 2015 shows a scenic spot at a dam project in Yangzhou, east China's Jiangsu Province. (Xinhua/Meng Delong)

An aerial photo taken on Nov. 19, 2015 shows colorful firs on a road at the Slender West Lake in Yangzhou, east China's Jiangsu Province. (Xinhua/Meng Delong)

An aerial photo taken on Oct. 25, 2015 shows a flower field in Shanghai, east China. (Xinhua/Li Zhiliang)

An aerial photo taken on Sept. 2, 2015 shows a lotus pond at the Century Park in Shanghai, east China. (Xinhua/Niu Yixin)

An aerial photo taken on Oct. 19, 2015 shows an artificial lake "Fish of Shanghai" in Shanghai, east China. (Xinhua/Li Bin)

An aerial photo taken on July. 1, 2015 shows a tea garden at Dingfeng Village of Fengming Township in Ya'an City, southwest China's Sichuan Province. (Xinhua/Lin Hao)

An aerial photo taken on Oct. 17, 2015 shows the scenery of Dongbao Village of Baita Township in Taizhou City, east China's Zhejiang Province. (Xinhua/Wang Huabin)

An aerial photo taken on Oct. 19, 2015 shows a wetland in Wugen Township of Wenling City, east China's Zhejiang Province. (Xinhua/Wu Pengfei)

An aerial photo taken on Sept. 8, 2015 shows the Lingang New City in the Pudong District in Shanghai, east China. (Xinhua/Cheng Zikai)

An aerial photo taken on Oct. 16, 2015 shows the Yangshan Container Port at International Shipping Center in Shanghai, east China. (Xinhua/Leng Weiwen)

An aerial photo taken on Oct. 11, 2015 shows the landmark buildings World Financial Center, Jinmao Tower and Oriental Pearl Tower at the Lujiazui Area in Shanghai, east China. (Xinhua/Cheng Xugang)

An aerial photo taken on July 1, 2015 shows the Fuxing Village in Ya'an City, southwest China's Sichuan Province. (Xinhua/Lin Hao)

An aerial photo taken on Nov. 9, 2015 shows a scenery of paddy field in Taizhou, east China's Jiangsu Province. (Xinhua/Tang Dehong)

An aerial photo taken on Nov. 9, 2015 shows the scenery of Changshan, east China's Zhejiang Province. (Xinhua/Li Jianbo)

An aerial photo taken on Nov. 25, 2015 shows the snow-covered Quancheng Park in Jinan, capital of east China's Shandong Province. (Xinhua/Zhu Jinming)

An aerial photo taken on Oct. 9, 2015 shows snowy terrace in Qinglanshan Township of Dingxi City, northwest China's Gansu Province. (Xinhua/Wang Hongbin)

An aerial photo taken on July 20, 2015 shows a ecological agriculture PV power station in Lianyungang, east China's Jiangsu Province. (Xinhua/Geng Yuhe)

An aerial photo taken on July 25, 2015 shows the Weishui Wetland of Fotang Sewage Treatment Plant in Yiwu, east China's Zhejiang Province. (Xinhua/Lyu Bin)

An aerial photo taken on Nov. 26, 2015 shows a landmark sculpture in Jinan, capital of east China's Shandong Province. (Xinhua/Zhu Jinming)

An aerial photo taken on Aug. 26, 2015 shows an anti-Japanese war veterans memorial in Hangzhou, capital of east China's Zhejiang Province. (Xinhua/Ai Hua)