To enter the Treasure Hall, one must pass through the underground prison. Song Jian was uncertain if this prison was still in use, so as he descended the stone steps, he moved cautiously, afraid to make a sound.
The underground prison was dim and damp. As he reached the end of the stone steps, a system prompt immediately popped up;
System: You discovered the Underground Prison and gained 100 experience points.
Song Jian entered, finding the area chaotic. In the middle of the prison was a corridor wide enough for two people to walk side by side. There were iron cages lined up along the corridors, filled with hay and some of it spilled onto the corridors.
Some of the cage doors were broken, but others were intact – and unbelievably, still housed some prisoners.
There were humans, elves, and Song Jian even spotted a Minotaur Beastman among the prisoners.
In the corridor, several half-dragon guards, wielding tridents, were patrolling back and forth.