  With the self-consistent three-dimensional cranked Hartree-Fock-Bogoliubov
(3d-cranked HFB) method, various types of rotational motion near the yrast line
are investigated in an even-even nucleus in the $A\simeq 130$ mass region
($^{134}_{58}$Ce$_{76}$). The possibilities of chiral rotations,
tilted-rotations, and dynamical aspects of these rotations are discussed
through the analysis of the 3d-cranked HFB solutions. Although a stable planar
solution of the chiral rotation is obtained, an aplanar chiral configuration is
found to be unstable when triaxial deformation is treated self-consistently.
