即以其人之道，还治其

Explanation: 【Source】 Song Xi "Mean Annotations" Chapter XIII: "Therefore a man of government people, that is, eye for an eye, but also a man as body."】 【Explain to that person to deal with other people's way to return to to deal with the man himself. 【Example】 conditions Jiandang this class, I do not know how many good people flexor injury, ~, is Kuaixin great things. (Qing Chen Chen, "Water Margin after the transfer," the twenty-second back)】 【story