優惠券

coupon

excellent / superior

privilege / favorable (terms) / preferential (treatment) / discount (price)

surname Hui

favor / benefit / to bestow / (literary) benevolence / (honorific)

(bound form) act of kindness (from a superior) / (honorific prefix) kind (as in 惠顧|惠顾[hui4 gu4])

bond (esp. document split in two, with each party holding one half) / contract / deed (i.e. title deeds) / ticket / voucher / certificate

variant of 券[quan4]