Wang Wei arrived in the Western Continent through the mortals's Subspace Travelling Technology. He was happy with the changes he saw so far, especially with the transportation technology.
Before he forced the world to change, most mortals would be born and die in the same Domain they were born. No, forget the domain, all of them would spend millions of generations stuck in the 10,000-kilometer radius of where they were born.
Only a few things like natural man-made disasters, dynasty changes, and famine would make them change location. However, 99% of them would die in the process, ending their lineage.
Now, any mortal with a decent income can travel the entire world, going from one domain to another and from one continent to another.
'After everything is settled, use of the Subspace should become cheaper, and everyone can travel anywhere with relative ease.'
After walking out of the portal, Wang Wei secretly used his power in the subspace.