The flame torrent came from an intersection hallway. The flame was from talismans activated by Lon Chang and Wu Chien. Lon Chang used one fire talisman over another, keeping the flames raging.
"What's wrong with you? This is not the time to be lazy! Keep using the talismans! Do not stop!!" Lon Chang exclaimed when he saw Wu Chien use his talismans much slower than him.
Wu Chien gritted his teeth and increased his pace.
They used one talisman after another. Various elements assailed the narrow hallway. With how packed the group of prisoners was, there was nowhere to run. All anyone could do was use their defensive arts to block the assaults and endure. They weren't even able to advance and counterattack because the pressure was unending. Using a talisman didn't require one to spend aether, so Lon Chang and Wu Chien could use them without getting tired for as long as they didn't run out of those talismans.