The paper presents a significant advancement in the creation and manipulation of Greenberger-Horne-Zeilinger (GHZ) states, which are maximally entangled quantum states. The authors propose an efficient protocol for generating GHZ states using two-dimensional quantum processors, achieving genuine multipartite entanglement with up to 60 superconducting qubits. They achieve a fidelity of 0.595 ± 0.008 for a 60-qubit GHZ state and 0.723 ± 0.010 for a 36-qubit GHZ state. The key innovation is the use of discrete time crystals (DTCs) to protect and control these fragile states. By engineering pairwise cat eigenstates as quantum many-body scars, the GHZ states are shielded from generic perturbations, enabling dynamic switching during state evolution. The authors demonstrate this by embedding a 36-qubit GHZ state in a cat scar DTC and observing "phase dancing," a temporal period-doubled oscillation of relative coherence phases, which persists over 30 cycles. This work not only advances the creation and manipulation of large-scale GHZ states but also establishes DTCs as a versatile platform for protecting and steering fragile quantum entanglement.The paper presents a significant advancement in the creation and manipulation of Greenberger-Horne-Zeilinger (GHZ) states, which are maximally entangled quantum states. The authors propose an efficient protocol for generating GHZ states using two-dimensional quantum processors, achieving genuine multipartite entanglement with up to 60 superconducting qubits. They achieve a fidelity of 0.595 ± 0.008 for a 60-qubit GHZ state and 0.723 ± 0.010 for a 36-qubit GHZ state. The key innovation is the use of discrete time crystals (DTCs) to protect and control these fragile states. By engineering pairwise cat eigenstates as quantum many-body scars, the GHZ states are shielded from generic perturbations, enabling dynamic switching during state evolution. The authors demonstrate this by embedding a 36-qubit GHZ state in a cat scar DTC and observing "phase dancing," a temporal period-doubled oscillation of relative coherence phases, which persists over 30 cycles. This work not only advances the creation and manipulation of large-scale GHZ states but also establishes DTCs as a versatile platform for protecting and steering fragile quantum entanglement.