Cities without city walls were often the most terrifying places.
Just like the Tianhe Region, it was the only city in the Azure Continent that did not have a city wall.
However, the defense of the Tianhe Zone was extremely strong. This was because such a city either had a heaven-defying ancient divine array, or the strength in the city was so terrifying that it did not need a city.
The current Azure Marsh was like this because the Beiming family had a supreme ancient divine artifact that guarded the Azure Marsh that was hundreds of millions of miles wide.
The existence of this treasure was forever the strongest defense.
No one knew where the Human Array Dao treasure was, and no one dared to lay their eyes on it. The main reason was that this treasure could only be opened by the Beiming family, and it required heaven-defying methods to see it.
