C649 The Mysterious Camp!

Zhang Chen gritted his teeth and placed his finger on the fingerprint.

Creak...

A crisp sound was heard.

Zhang Chen's heart was already in his throat!

His body was tense!

Why didn't he open the door?

At this moment, the red light on the fingerprint suddenly turned green.

Ka!

The door... opened.

Huh?

Zhang Chen's eyes widened in surprise when he saw this.

And..