Jiang Xubai, the "Jiang God" of the city's key high school, uses topology to calculate his crime route and probability to prove his alibi - this math competition gold medal coach is using the most sophisticated formula to avenge the student Lin Xiaoyu who was pushed off the rooftop by rich second-generation Zhao Kai.
Zhao Kai relied on power and money to suppress "intentional homicide" as an "accident", and even the autopsy report was tampered with. Jiang Xubai saw through the legal loopholes, the chalk became a tool to cover up fingerprints, the class schedule became the coordinates for planning death, and even the rotation angle of the tea cup hid a topological murder plot.
Zhang Yan, a veteran detective, is working on the case with a worn notebook. He doesn't believe in "perfect crimes" and uses half a piece of chalk and abnormal lesson preparation recordings to uncover logical traps. When the mathematical genius' criminal formula collides with the police's "clumsy method", the two confront each other back to back and mirror each other - is Jiang Xubai using evil to punish evil, or is Zhang Yan using procedures to uphold justice?
The chain of power protection stretches from the school to the public security bureau, and every step of the calculation steps on the abyss of human nature, until Jiang Xubai leaves the last question: "Is the probability of justice 1 or 0?"
It's pretty cool, why doesn't anyone comment?