Modern risks not only pose life-threatening crises for human beings but also bring about changes in social and cultural aspects. Quarantine and isolation are crucial measures in preventing the spread of an pandemic, which is a modern risk. Due to the regional lockdown, atomized modern individuals in urban areas are confined to the same community space and have developed spiritual connections and formed a risk community due to the common risks they face. Within the risk community, tension arises from coexisting interpersonal solidarity and conflicts caused by risk awareness, while outside the community, the risk community has clear boundaries but is exclusive. In the Chinese context of risk response, the tension between the logic of state control that prudently expands its scope and the individual logic of defense border that continuously narrows down shapes the characteristics of this new form of interpersonal relationship - the risk community.