Tā bǎ xiǎofèi jiàozuò jiǔqián, shì gè lǎopài shuōfǎ.
He calls a tip "jiuqian," which is an old-fashioned expression.
Tips
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酒钱 is a colloquial and somewhat old-fashioned term. In modern usage it can mean money for drinks/a round of drinks, or loosely a gratuity/tip. More formal: 小费 (tip), 饮料费 (beverage cost).
