"Watchdog"
This was a term from his orphanage days that no child wanted to mention; once brought up, most people would be engulfed by fear, even an excellent student like Yi Chen would feel severe psychological discomfort.
[The Third Escape]
At only seven years old, Yi Chen, by summarizing the failures of his first two attempts and re-planning the escape route, finally settled on a third escape plan.
Just when he was about to execute the plan in the dead of night, a boy from his dormitory named Xiao Yan, who hadn't fallen asleep, demanded to leave with Yi Chen, or else he would report him to the patrolling guards.
Even if Yi Chen gave up on escaping that night, he would have to be cautious every night thereafter.
He had no choice but to reluctantly agree.