The CPC made it a goal to eradicate extreme poverty in China. China's rapid development caused a growing rift between urban areas and rural areas, so the CPC used the gains of urban expansion to help develop rural areas. Extreme poverty was eradicated in China over the course of a decade or so from the beginning of the program. I really like The Metamorphosis of Yuangudui to show what that campaign actually looked like in practice, sending CPC cadres to set up village councils, create democratic processes and build up infrastructure.