On September 18, 2018, 600 mu photovoltaic power plant has become a beautiful landscape of the old mining area in Gantang Village, Heye Town, Guiyang County. The ecological environment of the mining area has been seriously damaged by mining for nearly 100 years. In recent years, Guiyang County has speed up mine restoration and mine greening, and also set up a 20 MW photovoltaic power plant in the mine at the same time, with the annual average power generation capacity of 19.95 million kw-hr, resulting in an annual benefit of nearly 20 million yuan, which has not only restored the ecological beauty of the mine, but also increased the collective income of the village.