To Enjoy the Morning Flower in the Evening -- Is Special Relativity a   Classical Theory?
  The relation between the special relativity and quantum mechanics is discussed. Based on the postulate that space-time inversion is equavalent to particle-antiparticle transformation, the essence of special relativity is explored and the relativistic modification on Stationary Schr\"{o}dinger Equation is derived. 
Guang-jiong Ni (Department of Physics, Fudan University and Shanghai,   200433, P. R. China)