A child waters a tree at Wuzhong Village in Qiaoxi District of Xingtai City, north China's Hebei Province, March 11, 2019. Students from Guoshoujing Primary School took part in a tree-planting activity to greet the upcoming Tree Planting Day, also known as Arbor Day, which falls on March 12 each year. (Xinhua/Mu Yu)