A loud deafening sound.

As they walk back from the school's infirmary, they see a security guard walking towards them with a torchlight.

They barely have time to react before they are spotted by the security guard.

"Hey, who is there?!"

"Li Jing." Lu Chen says and grabs her hands. "Follow me."

Li Jing barely has time to think before they run towards the school's audio studio which happens to be open at this time of the night.

Lu Chen shuts the door and uses his left hand to cover her mouth. A beam of flashlight shines through the window for sometime before it moves on.

The Audio room is silent, and the frantic heart beat of the two teenagers can be heard in the silent room.

Li Jing doesn't think twice before biting Lu Chen's fingers.

"Ouch." Lu Chen hisses and pushes Li jing away from him. "Let's go."

"Son of a ..." Li Jing mutters under her breath.

The both hurry to the hostel but just as Li Jing is about to enter her hostel, Lu Chen pulls her back and shows her the code box.