In the case of China Merchants Bank Credit Card, the subsidiary cards of China Merchants Bank Credit Card are handled by the main card for immediate family members (parents, spouses or children), and the subsidiary cards can share the credit limit of the main card (the main card can set the credit limit of the subsidiary card), and the accounts will be uniformly listed on the statement of the main card, and the main card will pay the accounts together. Applicants can apply for both the main card and the supplementary card, and the supplementary card can be applied separately. The main cardholder must have a card (except for international students' credit cards).

Whether to handle it at the same time depends on yourself, or you can only handle the main card.