'优惠券' (yōu huì quàn) literally combines three characters: '优' (yōu, meaning 'superior' or 'favorable'), '惠' (huì, meaning 'benefit' or 'favor'), and '券' (quàn, meaning 'voucher' or 'ticket'). Together, they form a compound noun meaning 'discount coupon' — a physical or digital voucher offering a price reduction or special deal on goods or services. It’s widely used in retail, e-commerce, food delivery, and travel booking platforms in China.

This term is neutral in register and commonly appears in both spoken and written Chinese — from casual conversations ('I got a 20-yuan coupon!') to official promotions ('Use this coupon before Friday'). Unlike generic terms like '折扣' (discount), '优惠券' specifically refers to a redeemable token with defined value or conditions. It often implies limited-time or limited-quantity offers, making it central to marketing strategies and consumer decision-making.