  We have used the Wide Field Spectrograph on the Australian National
University 2.3-m telescope to perform the integral field spectroscopy for a
sample of the Galactic planetary nebulae. The spatially resolved velocity
distributions of the H$\alpha$ emission line were used to determine the
kinematic features and nebular orientations. Our findings show that some bulge
planetary nebulae toward the Galactic center have a particular orientation.
