  Recently a lot of evidence that there exists a critical end point (CEP) in
the QCD phase diagram has been accumulating. However, so far, no reliable
equation of state with the CEP has been employed in hydrodynamical
calculations. In this article, we construct the equations of state with the CEP
on the basis of the universality hypothesis and show that the CEP acts as an
attractor of isentropic trajectories. We also consider the time evolution in
the case with the CEP and discuss how the CEP affects the final state
observables.
