  The manuscript contains Comment to "Quantum Spin Hall Effect and Topological
Phase Transitio in HGTe Quantum Wells" by B. Andrei Bernevig, Taylor L. Hughes
and Shou-Cheng Zhang Science 314, 1757 (2006). The text proves that the quantum
state, identified by these authors as the surface state located inside HgTe
well is incorrect physically. The kinetic energy of the state is negative. The
state cannot be identified as proper eigenfunction (vector) in the Hilbert
space. Therefore the state could be used as a primer in the topological state
theory, developed in the following publications.
