my country's "Electronic Signature Law" stipulates that the documents to which electronic signatures are not applicable include contracts or other documents, documents and other documents in civil activities. If the parties agree to use electronic signatures or data messages for documents, their legal validity shall not be denied simply because they are in the form of electronic signatures or data messages. The provisions of the preceding paragraph do not apply to the following documents: those involving personal relationships such as marriage, adoption, inheritance, etc. Involving the transfer of real estate rights and interests such as land and houses. Involving the cessation of water supply, heating, gas supply, power supply and other public utility services. Other situations stipulated in laws and administrative regulations that do not apply to electronic documents.