However, even Advanced Restriction-Breaking Stones were unable to break through an Advanced Void Zone, as they were different powers. Void Zones were made from the energy of a region, and they were very difficult for Restriction-Breaking Stones to break through.
It was a pity that Void Zones only extended for 5,000 kilometers. Zhao Fu wanted to make them wider so that anyone who wanted to enter the Xianyang Region without permission would have to walk for a long time and would be susceptible to many ambushes.
However, this was still quite good – ordinarily, it would take at least two to three days to travel 5,000 kilometers, and Great Qin would be able to set up some decent alerts so that Great Qin would be able to respond as soon as possible if people were to invade.