C25

At the end of the tunnel was the stairs leading up. Han Wenyue climbed a few steps and looked up, only to see light seeping out from a few holes in the walls of the staircase. As she smelled the fresh air, she couldn't help but feel happy, "There's a window here?"

"Yes." Alex smiled and took a few more steps up. "This tower has windows and a few air passages to the outside