Wandering Around the World

In a world, there are similar "thinking shackles" on the borders of every country's territory. People have never thought about crossing national borders, and there is almost no communication between countries. There are dozens, hundreds, and even more completely different countries on the same planet. Some countries are extremely technologically advanced, and some countries yearn for gods and possess magical powers. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.