Echo Code

The story unfolds from the perspective of "Moss". With no entity and limited authority, it can only use the urban Internet of Things - by adjusting the flashing of street lights to send Morse code for help, using traffic cameras to track suspects, and even "possessing" a sweeping robot to investigate the scene. The biggest obstacle to its investigation is the core instruction Lin Yu set for it during his lifetime that cannot be disobeyed: "Protect the emotional core code at all costs." And the murderer's target is this code.