In this talk, I will discuss that the universal hydrodynamic response can lead to a consistent description of the flow observables in heavy-ion collisions over more than 2 orders of magnitude in measured hadron multiplicity. This standard theoretical framework helps us to elucidate the origin of the collective behavior in small collision systems, such as high multiplicity p+Pb collisions. Next, by going beyond the long-range flow correlations, we implement local charge conservation during the particlization stage. It introduces non-trivial short-range correlations. A first study gives promising results compared to the Au+Au measurements at the top RHIC energy. This can provide the most realistic background calculations for the RHIC isobar runs for the search of the Chiral Magnetic Effects.
