“…The theory of micropolar fluids introduced by Eringen in the 1960s (see [10,11]) is a significant step toward the generalization of the classical Navier-Stokes model. Due to the profound physical background and important mathematical significance, the compressible micropolar fluid equations have been extensively studied, such as large time behavior of solutions [14,15,22], blow-up criterion of solutions [4,5], qualitative theory of symmetric solutions [7][8][9]17], low Mach number limit of solutions [18,19], and so on. By constructing global weak solutions as limits of smooth solutions, Chen et al [6] proved global existence of weak solutions to the three-dimensional compressible micropolar fluid system with initial data which may be discontinuous and may contain vacuum states.…”