The underground prison of the Suzhou Demon Suppression Bureau was originally built beneath a mountain, but after entering this dark gate, they continued to descend.
Along the way, all they saw were walls forged from profound iron, with the ground also paved with a layer of it.
Wei Fan swept his power of heart and spirit over the area and discovered that these profound irons had been altered by the willpower of a Divine Realm Martial Sect, making them not only harder than ordinary profound iron but also capable of isolating the power of heart and spirit and the power of heaven and earth.
Deng Boyong's voice rang out, "This great prison has been imbued with the efforts of each generation of grand commanders. When Commander He Tai Xian was in charge, he would spend one or two months each year altering the properties of these profound irons with willpower."
"Commander Wei, if you become the commander in the future, you'll also need to spare some time to reinforce the prison."
