The details are as follows:

1. Check on the official website or physical store of Food Music to see if there are stores in your city where mooncake coupons are available.

2. Bring mooncake coupons and valid documents (such as ID cards) to the designated store for redemption.

3. Choose your favorite mooncake variety and flavor in the store, and purchase according to the amount redeemed.

4. Show your mooncake coupon when checking out, and the clerk will give you a discount or deduction.