The Heavenly Underworld Star was different compared to what it was previously. After Su Mo's massacre, it had undergone a massive transformation.
Now, every city was under the protection of a strong defensive array that prevented outsiders from attacking it.
Some towns even had strong arrays around them.
These arrays were personally constructed by experts in the side tribe. Its defensive skills were strong and average Martial Sages in the Initial Stage would not be able to destroy it in a short period of time.
In order the construct these arrays, the Heavenly Underworld Star spent a large amount of manpower and resources.
After all, the heavenly Underworld Star was considered a medium-sized star that had a large number of cities and towns. As such, it was a large-scale operation.
However, in order to protect their tribesmen and stabilize the fear among the population, the experts of the Sorcerer Tribe had no choice but to do this.