1. Contact the courier company: First, contact SF Express Company as soon as possible to understand the situation and coordinate the solution. You may need to provide information such as order number and express delivery number to inquire about the process and situation of express delivery.
2. Cooperate with the police investigation: If the courier is detained by the police, you need to communicate with the police to understand the reasons and procedures of detention and try your best to cooperate. You may need to provide the courier number, order number, sender and recipient information, etc. So that the police can verify their identity and find out the problem.
3. Seek legal help: If legal issues are involved, I suggest you consult and seek legal help in time. You can consult the local lawyers association, notary office, judicial bureau and other institutions to understand the relevant legal provisions and procedures, and ask a lawyer to assist in handling them.
In short, if your SF Express is detained, please keep calm and don't worry. First of all, contact the courier company or online shopping customer service to inquire about logistics information and reasons for detention. If you need to cooperate with the police investigation, please provide relevant supporting documents and item information. If legal issues are involved, it is recommended to seek legal help in time.