The Prison of An Island

Premise: The protagonist, codename 0921, is serving a six-month sentence at Xinqiao Prison in Feili City. Every day, he goes to work outside the prison on An Island, making rear safety airbags for new-energy armored vehicles. During his sentence, he encounters all kinds of people: a selfish warden, a wily old mentor, the upright Old Wang, the two-faced Li Kuai, the troubled drunkard Old Chang, and two scheming young men, Xiao Hui and Xiao Ming. In the end, he uncovers a shocking secret about human experimentation on An Island.