No proof is required. The "Civil Procedure Law" and the "Criminal Procedure Law" have corresponding provisions regarding the absence of the recipient, and the court will implement it in accordance with the corresponding legal provisions.

Article 84 of the "Civil Procedure Law" The service of litigation documents must be accompanied by a service receipt. The recipient shall record the date of receipt, sign or seal on the service receipt.

The date of receipt signed by the recipient on the delivery receipt is the date of delivery.

Article 85 The service of litigation documents shall be delivered directly to the person to be served. If the person to be served is a citizen, he or she must hand it over to his adult family member who lives with him or her. If the person to be served is a legal person or other organization, the legal representative of the legal person or the principal person in charge of the other organization or the legal person or organization shall be responsible for the receipt. The recipient shall sign for receipt; if the recipient has a litigation agent, the document may be sent to his agent for signature; if the recipient has appointed a collector to the People's Court, the document shall be submitted to the recipient for signature.

The date on which the adult family member living with the recipient, the person responsible for receiving the document from a legal person or other organization, the litigation agent or the recipient signs on the delivery receipt shall be the date of delivery.

Article 88 If it is difficult to directly serve litigation documents, you may entrust another people's court to serve them on your behalf or serve them by mail. If delivered by mail, the date of receipt stated on the return receipt shall be the date of delivery.

Article 91: After receiving the litigation document, the agency or unit that forwards it must immediately hand it over to the recipient for signature. The date of receipt on the delivery receipt shall be the date of delivery.

Article 92: If the whereabouts of the addressee are unknown, or if delivery cannot be made by other means stipulated in this section, service shall be made by public announcement. It shall be deemed to have been served sixty days from the date of issuance of the announcement.

For the announcement to be served, the reasons and process shall be recorded in the case file.

Article 105 of the "Criminal Procedure Law" The service of summons, notice and other litigation documents shall be delivered to the recipient himself; if he is not present, it may be delivered to his adult family member or his unit. The responsible person collects it on your behalf.

When the recipient or the recipient refuses to receive it or refuses to sign or seal it, the sender can invite his neighbors or other witnesses to the scene, explain the situation, and leave the documents at his residence. , the reason for refusal and the date of service are recorded on the service certificate, and it is deemed to have been served if it is signed by the sender.