Urban–rural harmonisation has risen to prominence in recent social security reform in China. This article offers an account of the changing welfare institutions and social citizenship configurations unfolded by this particular policy approach. As social activism gained substantial weight as part of the regional developmental strategies of local governments, harmonisation efforts have led to a boundary shift of social citizenship largely defined by the within–without criterion rather than the urban–rural divide. In places where urban–rural harmonisation takes hold, the pivotal criterion for claiming social benefits is the possession of local resident status, regardless of whether this status is urban or rural. The heterogeneity of regional social security developments resulting from social decentralisation also calls attention to the ‘variable geometry’ of institutional change, i.e. various social policy domains manifest diverse degrees of institutional dynamics towards harmonisation. In this light, urban–rural harmonisation is likely to trigger competitive solidarity in terms of regional competition and emulation in economic development and social provision, leading to regional disparities that will shape the future contours of social policy and social citizenship in China.

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