Password Box

Zhou Wen tried using the mysterious phone's camera function to snap the metal block, but there was no reaction. Clearly, he couldn't store it on his phone.

Zhou Wen tried pressing the nine keys again and realized that although it didn't sink, there seemed to be a glimmer.

These grids can't really be buttons, right? Zhou Wen pressed a few other keys. As long as the pressure reached a certain level, each grid would emit a flash.

Could it be that this metal block is really a box with a code? Then what's the code? Could it be the ten numbers the former principal gave me? Zhou Wen thought for a moment and felt that something was amiss.

There were no numbers on the nine-key grid. Even if the ten numbers given by the former principal were really the passcode, he didn't know which one corresponded to 1 or 9.