  We study how to understand the complex coordinates involved in the
non-Hermitian but PT-symmetric systems. We explore a PT-symmetric oscillator
model to show that the entire information on the complex position is
attainable. Its real part is from the observation while its imaginary part is
from the non-Hermiticity parameter. We also propose a new complex extension of
P-transformation and T-transformation (the `parity' and `time reflection'
respectively). Particularly, the P-transformation realizes the left-right
reflection in the complex plane.
