Autumn scenery of Nanhu Park in north China's Hebei Province

A visitor enjoys the autumn scenery of Nanhu Park in Tangshan, north China's Hebei Province, Oct. 24, 2019. Nanhu Park used to be a deserted spot due to coal exploitation. Over years of management, the park has been serving as the "green lung" of Tangshan. (Xinhua/Xing Guangli)