Because the Tower Supervisor had to stay behind in Tiandu, looking across Da Xia, the only person who could deal with prison-level demons was, perhaps, only Gu Chen.
With Gu Chen's current strength and speed, once a prison-level demon appeared anywhere, he could rush there with utmost haste.
This was the best strategy that Gu Chen and the Tower Supervisor had come up with after consultation, in order to deal with prison-level demons.
Fortunately, due to the formidable strength of the prison-level demons, it was not easy for them to descend upon Jiuzhou.
One day, when Gu Chen could fluently integrate domains and achieve it at a thought, he went to the Jing Tian Department and conveyed the words the Taoxu Road Saintess Chu Yue Ling had told him to the Tower Supervisor.
"Tower Supervisor, do you know the whereabouts of the so-called 'heavenly legacy'?" Gu Chen asked.
Upon hearing this, the Tower Supervisor looked at Gu Chen and sensed his curiosity.