Why does "she disappeared" have to file a case?

The reason why "she disappeared" must be put on record may be because it involves the following important factors:

1. Personal safety: If a person is missing, especially if there is no contact within a certain period of time, there may be a risk of endangering his personal safety. In view of this situation, filing a case for investigation can start a comprehensive search and investigation to ensure the safety of missing persons.

2. Possibility of criminal offences: Missing persons may be related to criminal offences, such as kidnapping, trafficking and arson. In this case, the police need to file a case for criminal investigation in order to trace the suspect and protect other potential victims.

3. Looking for clues: After the police file a case, they can mobilize various resources and professionals to conduct searches and investigations, find clues and determine the whereabouts of missing persons. This includes collecting evidence, collecting DNA and interrogating suspects.

4. May need assistance: When a person is missing, extensive social assistance may be needed to find and provide clues. After the case is filed, the police can cooperate with the media, volunteer organizations and the public to find the missing persons.

Generally speaking, the purpose of filing a case is to ensure the safety of missing persons, conduct investigations, track down criminal suspects and seek clues and help. This is a necessary measure to maintain social order and protect people's safety.