  Quantum field theory has been established on symmetries, but their
fundamentality could be limited as practical calculations of physical
observations are not based on interacting Lagrangian. The requirement of
Lorentz invariance on vacuum expectation values is contradicted by parity
violation with massive fermions and Lorentz violation of the approximation in
the standard model is proved. After alternative interpretation of quark mixing
and problems of CP violation are addressed, the composite properties of neural
meson will be suggested as origin of CP violation with possible experimental
tests. In conclusion, fundamental symmetry violation is still inconclusive due
to the limited theoretical assumptions and physical observations.
