Pressing the special stone blocks on the wall in sequence, the bricks miraculously slid sideways, and the secret passageway piercing through the underground city appeared once again before Yang Yu.
At the other end, Iyas and Bai Jin had been waiting for a long time, and upon seeing Yang Yu, both of them simultaneously let out a sigh of relief.
A dull roar echoed from beneath the ground. Ignoring Yang Yu's orders, Bai Jin didn't hesitate to run into the Underground Maze, searching for Yang Yu as she dashed downwards.
Upon reaching the fourth floor, Bai Jin encountered Iyas and a group of petite Hani, but Yang Yu was nowhere to be seen. She persistently questioned Iyas about the loud noise earlier and what exactly Yang Yu was doing.
Iyas hadn't expected Yang Yu to cause such a big commotion and could only explain everything to Bai Jin.
