Hope is everywhere. These days, I have been thinking about my research project. How large difference there is between theory and computation. Before yesterday, I only thought a little, but never practiced it, because I thought that the delta-distance and the delta-time are short enough. I computed it with computer by means of shortening the delta time yesterday. The result shows me that the amplitude is larger than before, which makes me rejoiceful. I thought I would never finish the project, but now I can see daylight.