Piezoelectric ceramics convert mechanical energy into electrical energy and are widely used in sensors, transducers and actuators. However, the field has long been constrained by a classic trade-off, often described as the impossibility of having “both fish and bear’s paw”. In practice, it is desirable for piezoelectric ceramics to simultaneously exhibit a high piezoelectric coefficient (d₃₃), a high Curie temperature (T_c), a large electromechanical coupling coefficient (k_p) and a low dielectric loss (tanδ). Unfortunately, these key properties are intrinsically interdependent such that improvement in one often comes at the expense of another. Breaking this trade-off to enable the concurrent enhancement of multiple properties remains one of the central challenges in the field.