C159 Peristalsis

"Dong, dong, dong." Qin Ran knocked on the door. No one answered. She called again and waited for a few seconds. It was still quiet inside.

Maybe no one was there? Qin Ran thought to himself as he tried to turn the doorknob. He didn't expect the door to be unlocked and opened instantly. Qin Ran walked in and muttered in a strange tone, "Strange, it's obviously time for work