  It is pointed out that at present we only prove that inertial static mass and
gravitational static mass are equivalent. We have not proved that inertial
moving mass and gravitational moving mass are also equivalent. It is proved by
the dynamic effect of special relativity that inertial moving mass and
gravitational moving mass are not equivalent. Besides, it can be proved that
the principle of general relativity is untenable. It is only an apparent
felling of mankind actually. Therefore, there exists serious defect in the
foundation of the Einsteins theory of gravitation. We need to renovate our
basic idea of space-time and gravity.
