What do you mean by separation of letters and visits?

Legal analysis: three spans: cross-region: a case involves two regions, such as immigrants, and may involve two regions: the domicile and the refuge. Interdepartmental: A case involves two or more departments. Cross-industry: A case involves two or more industries. Separation: separation of people: people and things belong to two places. If the complainant has a case elsewhere, he must solve it at the place where he is registered. Separation of households: the household registration is inconsistent with the place of residence. Due to urban planning, renovation of dilapidated buildings, housing rental, population mobility and other reasons, the problem of separation between people and households has become increasingly prominent. Separation of people and households: it is more complicated, and the place where the case occurred, the place of household registration and the place of residence are not together.

Legal basis: Specific procedures for coordination in Article 3 of the "Code for Coordination of Letters and Calls with Three Spans and Three Separates" issued by People's Republic of China (PRC) State Bureau for Letters and Calls. All petitions submitted to the State Bureau for Letters and Calls for coordination of "three spans and three points" must first be communicated and docked at the provincial level, and the provincial bureau for letters and calls (office) or the general office (room) of the ministries and commissions shall submit a report. The organization and coordination of relevant business departments shall be subject to the consent of the principal responsible comrades of the departments; If the coordination meeting needs the participation of municipal party and government leaders, it shall be reported to the leaders in charge of the bureau for approval; Need to go to the field to understand the situation and coordination, in accordance with the provisions of the State Bureau for Letters and Calls on strengthening and coordinating the supervision of letters and visits, submitted to the director's office meeting for study and determination, and unified organization and implementation.