After they left, these ten people immediately activated a barrier array and covered the camp. This barrier array was directed to the inside and not the outside. In other words, it was impossible for the people inside to go out, and it was even impossible to attack the outside. However, the people outside the barrier array could attack the people inside.
This kind of magic circle was also a product of the bewitching Empire. However, its initial purpose was very simple. It was used as a livestock pen. Later, it could also be used to lock people up.
After the ten people activated the barrier array, they flew into the sky and monitored the guards. When the guards saw the Jade Wyrm Dragon and the others leave, some of them felt that their chance had come and were ready to move. However, as soon as they moved, the people around them immediately looked at them and raised the staffs in their hands.