Is our world could be exist in the complex space? We already know that our living space are in 3-D. But if the space we live is actually in the complex one, then that means we are living in the 6-D sapce. Maybe it is hard to say what the dimension of our space really are. One thing for sure is there always some mysteries waitting to be answered. Quantum mechanics is one big mystery in the physics, I think. What is the matter wave? What make the tunneling effect? Why we have to use the probability to describe the quantum world? There must be something we do not know yet. Is there any possibility to say that we can deal the quantum problem within the complex space, not in the Hibert space? Or is there any possibility to have a better describtion to the quantum world? Yes, I think it is.