1746年,郑板桥上任山东潍县知县。这天,他正端坐公堂批阅公文,有人击鼓鸣冤。郑板桥吩咐衙役将击鼓之人带上堂来。击鼓之人是一个哑巴,跪在地上呈上状子。郑板桥细看之下,明白了案情。哑巴原来会说话,5岁时生了一场病才失声不能说话,但耳朵却好使。哑巴有一个同胞哥哥,父母相继去世后,留下一大笔财产,其哥哥想独吞家财,便狠心地将哑巴赶出了家门。前任县令因哑巴的哥哥拒不承认哑巴是他的胞弟,又苦于没有证据,对哑巴的告状不予理 In 1746, Zheng Banqiao took the magistrate of Weishan, Shandong. That day, he was sitting in court to read official documents, some people drumming injustice. Zheng Banqiao told runners to drum people to come to church. Drummer is a dumb, kneeling on the ground was like. Ban Banqiao look carefully, understand the case. Mute would have been talking, 5-year-old gave birth to a disease before he could not speak, but his ears are good. Dumb a brother compatriots, parents have died, leaving a lot of property, his brother would like to swallow their own money, they cruel to drive out of the house dumb. Former magistrate due to dumb brother refused to recognize the dumb is his brother, but also suffer from no evidence of mute complain