The cultivators of Lou Cheng had done something to turn the nine paths to the outside world into paths of death.
Unless they could fly, none of the native cultivators in the ruins could leave.
The person who gave the order might have been the Lord of Tianyang city, or it might have been the private action of the cultivators in loucheng, but none of these were important.
The dead had no right to judge, and the cultivators of loucheng city would side with their own people and think that these native cultivators deserved to die.
As for the cultivators of Lou city, they could easily climb over the wall with the help of a flying Prefecture master.
There were also cultivators who made use of the height advantage of the wall to attack the monsters that were following them and protect their comrades as they quickly retreated.
In a very short time, the surviving cultivators of loucheng had all evacuated, leaving the native cultivators struggling in the cage-like ruins.