Mathematics professor Tan Zeyan's marriage game with law firm partner Ji Xiange. This marriage, which began with a contract, was carefully calculated from the beginning - he used Bayes' theorem to analyze her late return, and she laid legal foreshadowing in the prenuptial agreement. When Tan Zeyan tried to use a mathematical model to predict the divorce rate, he secretly added an "emotional correction term" to the formula; Singer Ji Xian held an agreement with a trap, but buried an unsent group photo deep in the file.
From monitoring in the laboratory to the recording pen in the law firm, from game theory cross-examination in court to formula deduction in the study late at night, they built walls with reason, but saw each other's flaws in every confrontation: the body temperature curve he drew when she had a cold, and the chain of evidence she silently added when he was misunderstood. When the trap of prenuptial agreements surfaced, and when the divorce rate predicted by the model soared to 92%, the two people who are best at calculation finally discovered that love is never the optimal solution that can be solved, but a nonlinear equation that takes a lifetime to calculate.
