Is it true that the goods are detained for customs clearance with ID cards?

No need. Personal identification documents such as ID cards are not required for customs clearance. If your goods are detained, the customs will ask for the corresponding customs clearance documents and supporting documents, go through the relevant formalities and pay the fees. If you receive such a phone call or text message, you need to verify the authenticity and correctness of the relevant information first. You can call the customs customer service phone or go to the local customs department for consultation.