  Heavy-ion collisions undergo various stages in their evolution and it is
crucial to disentangle the initial- and final-stage effects. In this work, we
report measurements of two types of observables: (i) charge-dependent directed
flow ($\Delta v_1$), which is sensitive to the initial ultra-strong
electromagnetic fields, and (ii) flow correlations, such as $r_n (\eta)$ which
is sensitive to the initial longitudinal de-correlation, and correlations among
flow harmonics. These measurements contribute to constraining the initial state
of the collisions, and through a comprehensive beam energy scan, we gain
significant insights into the system evolution in the presence of initial
spatial asymmetry and electromagnetic fields.
