In this article, I will focus on discussing why we operate sybil-attack at our related grant program, using actions to prove the effectiveness of quadratic funding(QF). To conclude, I believe that the 'local chapter' of the Greenpill Network is not easily developed into a mature, sustainable, non-profit action community, but is suitable as a stress tester for quadratic funding tools. Below, I will share the story step by step and analyze the reasons.