Another world conquest manual

In a sudden accident, a tourist bus carrying twenty-eight people unpreparedly traveled to a certain fairy world.
The years are long, and hundreds of years in another world have passed by in a hurry.
Just when the descendants of these time-travelers were facing crisis again, a light door suddenly appeared and reconnected the two worlds...
All in all, this is the story of an ancient oriental nation developing a different world to their heart's content and feeding themselves back...

(The highest order for this book is 30,000+, the average order is 8,500+, the quality is guaranteed)