Workers maintain photovoltaic panels at a photovoltaic power station in Zhaoqiao Town of Wuyi County, north China's Hebei Province, June 23, 2018. In recent years, the Wuyi County has actively promoted the construction of photovoltaic power stations amid crops for the purposes of increasing agricultural land utilization while improving farmers' income. At present, two photovoltaic power stations have been set up in the county, covering an area of over 93 hectares. (Xinhua/Zhu Xudong)