legal ground
Article 107 of the Criminal Procedure Law of People's Republic of China (PRC)
The service of subpoenas, notices and other litigation documents shall be delivered to the addressee himself; If I am not here, I can give it to his adult family or the person in charge of the unit to collect it.
If the addressee himself or his agent refuses to accept or sign or seal, the addressee may invite his neighbors or other witnesses to be present, explain the situation, leave the document at his residence, record the reasons for refusal and the date of delivery on the service receipt, and the addressee will sign it, which means delivery.