No one can sign the court summons.

Legal analysis: If the summons cannot be served on the defendant, the court can choose to serve it by announcement. The service of the notice may be posted on the bulletin board of the court, the original residence of the addressee, or published in a newspaper. Notice service can only be used when the whereabouts of the addressee are unknown or cannot be served by other means. The legal effect of announcement service is the same as other service methods.

Legal basis: Article 84 of the Civil Procedure Law stipulates that if the whereabouts of the addressee are unknown or cannot be served by other means specified in this section, the notice shall be served. Sixty days after the announcement, it shall be deemed to have been delivered. When the announcement is served, the reasons and process shall be recorded in the file.