Four demonstration agricultural parks, 974 solar greenhouses with anannual revenue of 40,000 yuan on average, and more than 500 households benefited. This is what State Power Investment Corporation Limited (SPIC) has done in Yanchuan County, Yan'an through the "Green Power + Ecology + Poverty Alleviation" model. The company has injected new vitality and brought more benefits to the disadvantaged area. Want to know more about the stories behind the smiles of the locals? Check out the video to find out the answer.