Huainan Mining doesn't think that letters and visits to Beijing 95 years ago are illegal, does it?

Not necessarily illegal. According to Article 16 of the Regulations on Letters and Visits: "If a complainant proposes a letter and visit in the form of a visit, he shall submit it to the organ at the same level or at the next higher level that has the right to handle it according to law." However, violating the prohibitive provisions of Article 20 of the Regulations on Letters and Visits will not only disrupt the normal order of letters and visits, but also disrupt public order and endanger the safety of the state and the public. It is usually an illegal act of letters and visits, and whether to give administrative or even criminal punishment should be comprehensively judged according to the subjective fault of the offender, the objective performance of the illegal act, the seriousness of the circumstances, and the degree of social harm.