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Ring exchange is an elementary interaction for modeling unconventional topological matters which hold promise for efficient quantum information processing.We report the observation of four-body ring-exchange interactions and the topological properties of anyonic excitations within an ultracold atom system.A minimum toric code Hamiltonian,in which the ring exchange is the dominant term,was implemented in disconnected four-spin plaquette arrays formed by two orthogonal superlattices.The ring-exchange interactions were resolved from the dynamical evolutions of the spin orders in each plaquette,matching well with the predicted energy gaps between two anyonic excitations of the spin system.