The large time-scale evolution of two counter-propagating shock waves in the hohlraum has been investigated using both the hybrid fluid-PIC model and hydrodynamic model. It has been found that shock waves compress and heat gas plasma through a series of interactions. This makes the plasma a high-temperature, high-density platform that is stable for hundreds of picoseconds, which may lead to a significant enhancement of stimulated Raman scattering by reducing the Landau damping. Additionally, the interaction between shock wave and the wall/gas interface causes significant mixing of gas ions with wall plasma, resulting substantial differences in density and temperature profile between the hybrid fluid-PIC and hydrodynamic simulations. These insights not only deepen our understanding of shock dynamics in hohlraum environments but also improve the precision of plasma-condition predictions for inertial confinement fusion experiments.