Under normal circumstances, you don't need to bring your ID card to meet people at the airport. Identity card is usually a necessary document to prove personal identity and go through relevant formalities. Just pick someone up at the airport directly, without going through boarding and security check. Generally speaking, you don't need to bring your ID card.
Before picking up the plane at the airport, it is recommended to know the specific regulations and requirements of the local airport in advance. There may be different regulations for special circumstances, such as the need for additional certificates or authorization documents.