  The Relativistic Configuration-interaction Density functional (ReCD) theory
that combines the advantages of large-scale configuration-interaction shell
model and relativistic density functional theory is extended to study nuclear
chiral rotation. The energy spectra and transition probabilities of the chiral
doublet bands are reproduced satisfactorily without any free parameters. By
analyzing the probability amplitudes of the wavefunctions, the significant
roles of configuration mixing and four quasiparticle states to the chiral
doublets are revealed. The evolution from chiral vibration to static chirality
are clearly illustrated by the K plot and azimuthal plot. The present
investigation provides both microscopic and quantal descriptions for nuclear
chirality for the first time and demonstrates the robustness of chiral geometry
against the configuration mixing as well as the four quasiparticle states.
