Song Zhao realized that with his mouth covered, Researcher One couldn't speak.
"I'll let go of your mouth, but don't scream, you know the consequences. Nod if you agree."
"Mhm mhm," Researcher One hurriedly nodded.
After Song Zhao let go, Researcher One indeed almost screamed for help, but seeing Song Zhao's threatening gaze and the dagger against his neck, he swallowed his scream back.
"Big brother, big brother, weapons don't have eyes, please be careful with what you're holding."
"Otherwise, take it back, I promise not to cause any trouble,"
Researcher One said with a trembling voice.
"Enough talk, how do we open the door?"
Gu Yanzhi pressed where Researcher pointed on the floor and found an inconspicuous spot, stepped on it, and like the main gate, a password input system appeared on the wall.
