Hello, the supplementary card is only used by the spouse, children and parents of the main cardholder. Domestic applicants must be 14 years old, and overseas applicants must be 18 years old.

The secondary cards share the credit line of the main card, and their accounts are merged into the main card account without independent bookkeeping. Sub-card points are accumulated in the name of the main card holder, and the repayment of the sub-card is included in the main card account.