Ten years ago, transcription student Lin Yan witnessed the examiner tampering with the examination paper of Xu Ziling, a scholar from a poor family, and secretly memorized the full text. Xu Sheng died of illness soon, so Lin Yan hid the evidence and went north to take the exam. Ten years later, when he was promoted to censor, he impeached Liu Kun, the mastermind who had become a highly respected official, in the court hall. Faced with the accusations of tampering with test papers, embezzling property, and killing people, Liu Kun chuckled and asked in front of the emperor: "If I hadn't polished it back then, would Kuang Sheng An have survived until the results were released?" A life-and-death battle that began with a mark in the examination room finally involved the huge farm case that shocked Jiangnan. The ink-marked waves arose from this.
