Original Alien Founding Nation Through Historical Eras

Dynasty Struggle for Hegemony, No System, Creation of Forces, Layout of the World, Fantasy

Such as the legend of Lingtian, the iron cavalry in troubled times

Traveling Through Primitive Tribes, There Is a System to Develop and Unify Small Tribes

Porters from Both Worlds

I would like to read a book similar to "Transportation Between Two Realms: The Sisters at the Beginning Are Playing with Me, Old Popsicle". Are there any high-quality books about traveling between two worlds to become a treacherous man? It's really annoying for my brother that he's short of books.

Are There Any Historical Fiction Stories Where the Protagonist Travels Back to the Republic of China Period?

Seeking to Lead China's Growth in Modern Times Is to Be That

Or there is a plot like "I made you a fool but you unified the six countries" where the history teacher talks about the protagonist.