How to use the birthday cake coupon of China Merchants Bank?

China Merchants Bank birthday cake coupons can be redeemed at the local China Merchants Bank on the birthday. The birthday cake coupon of China Merchants Bank is a kind of welfare issued by the recruiting bank, which can be collected every birthday. China Merchants Bank was established in Shekou, Shenzhen, 1987. It is the first joint-stock commercial bank wholly owned by an enterprise legal person in China and the first pilot bank to promote banking reform from outside the system.