[Warning: BE]
Ten years ago, a murder occurred in Wencang.
Jiang Chengwei, the owner of the fireworks factory, killed Xiao Shan, a young gangster in Xicheng.
Ten years later, Jiang Chengwei's son Jiang Lu had to return to Wencang from Shanghai to take the college entrance examination due to cadastral restrictions. Jiang Lu and Xiaoshan's son Xiao Yu became classmates.
When there is no trace of the murderer, the assumption of whether there is a murderer or not is the victim.
Intention: Jiang Lu, I always owe you an apology.
