C2491 Unsafe

"Swish …"

A few seconds after Heng Yanlin finished his sentence, a sharp sound suddenly came from one of the walls. A figure suddenly appeared on the wall, protruding from the wall. It then turned into a person wearing a black cloak and appeared in Heng Yanlin's line of sight.

"Hello, Mr. Lin." An aged voice slowly sounded from Heng Yanlin's mouth.

"Who are you?" Heng Yanlin asked lightly