A man plays the saxophone in Huancheng Park in Hefei, capital of east China's Anhui Province, May 5, 2021. (Xinhua/Zhang Duan)

In this aerial photo, a man exercises in Huancheng Park in Hefei, capital of east China's Anhui Province, May 5, 2021. (Xinhua/Zhang Duan)

In this aerial photo, children have fun in Huancheng Park in Hefei, capital of east China's Anhui Province, May 5, 2021. (Xinhua/Zhang Duan)

In this aerial photo, people stroll in Huancheng Park in Hefei, capital of east China's Anhui Province, May 5, 2021. (Xinhua/Zhang Duan)