1. Call the customer service phone of CCB first to explain the situation and provide relevant information.
2. Secondly, go to the local CCB outlet to consult the staff, explain the situation and ask how to deal with the expired children's card.
3. Then, through consulting official website or other reliable channels, understand the procedures and regulations for handling children's cards after they expire, and handle them according to the policy requirements.
4. Finally, contact the local medical insurance department, explain the situation in detail, and apply for a healthy child card for Tianjin residents.