Aerial photo taken on Aug. 9, 2018 shows a photovoltaic power plant built above the fish pond in Yintu Township of Jinhu County, east China's Jiangsu Province. (Xinhua/Li Yuze)

A villager catches crayfishes in a fish pond covered by photovoltaic power panel in Yintu Township of Jinhu County, east China's Jiangsu Province. (Xinhua/Li Yuze)

A villager present crayfishes cultured from fish pond covered by photovoltaic power panel in Yintu Township of Jinhu County, east China's Jiangsu Province. (Xinhua/Li Yuze)

Aerial photo taken on Aug. 9, 2018 shows a villager cleaning the flotage in a fish pond covered by photovoltaic power panel in Yintu Township of Jinhu County, east China's Jiangsu Province. (Xinhua/Li Yuze)