Development of Civilization from Primitive Times

Traveling back to the primitive era, in order to live a better life, we must develop civilization, speed up the historical process and let history develop rapidly. Technology is the first force of development. It's a casual writing, just for fun, nothing else. Please see the content, new book, for details. If there is anything inappropriate, please chat privately. Thanks for watching. The writing is not good and the plot is not very good. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.