C688 Creak Creak Creak

When Liu Yiwen heard the sound, he instantly disappeared from where he stood, speeding towards the source of the sound.

Black Glasses frowned and looked at Su Ming, who was still at the same place. After hesitating for a moment, he also followed.

The two of them instantly disappeared into the fog on the second floor.

"What... what is that sound?" Ye Lin Qian said in fear