  Cerium is a fascinating element due to its diverse physical properties, which
include forming various crystal structures ($\gamma$, $\alpha$, $\alpha^{'}$,
$\alpha^{''}$ and $\epsilon$), mixed valence behavior and superconductivity,
making it an ideal platform for investigating the interplay between different
electronic states. Here, we present a comprehensive transport study of cerium
under hydrostatic pressures up to 54 GPa. Upon applying pressure, cerium
undergoes the $\alpha$ $\rightarrow$ $\alpha^{''}$ transition at around 4.9
GPa, which is accompanied by the appearance of superconductivity with $T_{\rm
c}$ of 0.4 K, and $T_{\rm c}$ slightly increases to 0.5 K at 11.4 GPa. At 14.3
GPa, $T_{\rm c}$ suddenly increases when the $\alpha^{''}$ phase transforms
into the $\epsilon$ phase, reaching a maximum value of 1.25 K at around 17.2
GPa. Upon further increasing the pressure, $T_{\rm c}$ monotonically decreases.
Together with the results of previous studies, our findings suggest that the
evolution of superconductivity in cerium is closely correlated with the
multiple pressure-induced structural transitions and corresponding unusual
electronic structures.
