When facing with various complicated phenomenon in the world, in most cases people tend to concern more about what appears to float on the surface of water rather than to emphasize in something hidden behind the wall. Direct though eyesight is, critical analyses in mind come to be the key element for the truth of any issues in historical rivers. When facing with various complicated phenomenon in the world, in most cases people tend to concern more about what appears to float on the surface of water rather than to emphasize in something hidden behind the wall. Direct though eyesight is, critical analyses in mind come to be the key element for the truth of any issues in historical rivers.