I Became the Chief of a Primitive Village

Briefly about I Became the Chief of a Primitive Village manga:

Su Bai, a writer, falls off a cliff. He then finds himself in another world, the society of a primitive tribe, and using a system of daily help and knowledge of modern society, he brings the primitive tribe out of poverty and transforms it into an advanced civilisation!

I Became the Chief of a Primitive Village manga. 

He will build his own country to become more advanced!