Suan zhang

The summer after the college entrance exams, 18-year-olds in the quiet border town of Yunnan eagerly awaited or carefully planned their long-anticipated summer break. But a heinous crime struck without warning, a middle-aged woman from out of town was found dead by drowning, drawing widespread attention to the town. What the teenagers never expected was that this case would unravel the mystery of their own origins. Determined to uncover the truth, they joined forces with the police in a relentless investigation.