This presentation focuses on a recent trend of young urban Chinese people who have decided to settle down in countryside to launch an intentional eco-friendly community that try to be self-sufficient. I will analyze to what extend the model of society they are building is a response of the environmental crisis. This question includes a technical and a non-material dimension. Using recent fieldwork and interviews, I will examine first their practice, the tools and technics they create and how it could be extended to foster the transition toward an eco-friendlier model of society. I will then analyze the role of the eco-friendly practices in their individual trajectory, identity and values as well as in their collective norms and project. The hypothesis that I will examine is that eco-friendly self-sufficiency is a practice that give unit and meaning to their collectivity and help responds to the vacuum created by the crisis of modern societies.