《汉书·志·刑法志》
春秋的时候，王道逐渐被破坏，政教风化不普及，子产为郑国相时就铸刑法于鼎上。
春秋之时，王道浸坏，教化不行，子产相郑而铸刑书。
During the Spring and Autumn period, the Way of the King was gradually destroyed, and political and educational customs were not popularized. When Zi Chan was the prime minister of the State of Zheng, he cast the criminal law on the cauldron.