No. According to inquiries on the Tang Palace Mooncake official website, Tang Palace mooncake coupons are gift cards and cannot be sold to merchants and can only be used when purchasing mooncakes. Moon cakes are one of the traditional delicacies of the Han people in China. They were originally used as offerings to worship the moon god. Later, they gradually developed into festival foods. They are used to worship the moon and as gifts to relatives and friends, symbolizing a happy reunion.