Civilization Dead End

A highly evolved civilization will gradually lose its ability to innovate, which is fatal but unavoidable. Xinghe tried every means for the development of civilization, but in the end he still went to destruction. (I wonder if some people will find the idea of ​​controlling time in this book ridiculous, and they firmly believe that the speed of light cannot be exceeded. I can understand it, but I still write it because I always feel that science should not have barriers. What I write is a possibility, and I try to make this possibility as reasonable as possible.)