A kid enjoys himself in a huge balloon on the water at Xinghua Park in Hefei, capital of east China's Anhui Province, Dec. 16, 2018. Balmy weather in winter in Hefei recently helped promote outdoor recreation. (Xinhua/Yang Xiaoyuan)

　　A kid plays with soap bubbles at Xinghua Park in Hefei, capital of east China's Anhui Province, Dec. 16, 2018. Balmy weather in winter in Hefei recently helped promote outdoor recreation. (Xinhua/Yang Xiaoyuan)

　　A man plays the saxophone at Huancheng Park in Hefei, capital of east China's Anhui Province, Dec. 16, 2018. Balmy weather in winter in Hefei recently helped promote outdoor recreation. (Xinhua/Yang Xiaoyuan)