The two credit cards refer to the main card and the supplementary card respectively. The supplementary card is generally the immediate family member, spouse or children of the main card holder. The main card and supplementary card have the same limit, and enjoy *** , all consumption of the supplementary card is shown in the main card statement, and is repaid by the main card. The main card can control the supplementary card. Once the main card is canceled, the supplementary card cannot be used.