Researchers have successfully generated and preserved a 60-qubit Greenberger-Horne-Zeilinger (GHZ) state with a fidelity of over 0.59, demonstrating genuine multipartite entanglement. This achievement is enabled by high-fidelity quantum gates and an efficient entangling protocol for two-dimensional quantum processors. The GHZ state was embedded in a cat scar discrete time crystal (DTC), which protects the state from perturbations and enables dynamic switching during evolution. The study also shows that the GHZ state exhibits "phase dancing," a temporal period-doubled oscillation of relative coherence phases, which persists for 30 cycles. The results establish cat scar DTCs as a versatile platform for protecting and steering fragile quantum entanglement. The work highlights the potential of DTCs in quantum computing and quantum information processing, offering a new approach to enhance the stability of GHZ states against generic perturbations. The experiments were conducted on two superconducting processors with 60 and 36 qubits, respectively, and involved the use of high-fidelity quantum gates and digital quantum circuits. The study also demonstrates the ability to dynamically switch the scarred subspace to accommodate different GHZ states, showcasing the flexibility of cat scar DTCs in controlling quantum dynamics. The findings open new avenues for exploring large-scale GHZ states and the practical applications of nonequilibrium quantum matter.Researchers have successfully generated and preserved a 60-qubit Greenberger-Horne-Zeilinger (GHZ) state with a fidelity of over 0.59, demonstrating genuine multipartite entanglement. This achievement is enabled by high-fidelity quantum gates and an efficient entangling protocol for two-dimensional quantum processors. The GHZ state was embedded in a cat scar discrete time crystal (DTC), which protects the state from perturbations and enables dynamic switching during evolution. The study also shows that the GHZ state exhibits "phase dancing," a temporal period-doubled oscillation of relative coherence phases, which persists for 30 cycles. The results establish cat scar DTCs as a versatile platform for protecting and steering fragile quantum entanglement. The work highlights the potential of DTCs in quantum computing and quantum information processing, offering a new approach to enhance the stability of GHZ states against generic perturbations. The experiments were conducted on two superconducting processors with 60 and 36 qubits, respectively, and involved the use of high-fidelity quantum gates and digital quantum circuits. The study also demonstrates the ability to dynamically switch the scarred subspace to accommodate different GHZ states, showcasing the flexibility of cat scar DTCs in controlling quantum dynamics. The findings open new avenues for exploring large-scale GHZ states and the practical applications of nonequilibrium quantum matter.