1. At first, the paper of "Slang Lawyer" was in the hands of Professor Xu's lover. Later, the mayor threatened Hui Zhen, and the real proposition was in the mayor's hands.

2. Professor Xu's thesis concerns the principal's interests. Once the paper is published, the consequences will be unimaginable. When the mayor gets the newspaper, he will seize the president's weakness.

The mayor pretended to give the president a document to gain the president's trust. In fact, he still has the original paper.