‘Guāzi’ literally means ‘melon seed’, but in modern Mandarin it almost always refers to roasted sunflower seeds — a beloved snack across China. Though the character 瓜 (guā) means ‘melon’ or ‘gourd’, and 子 (zi) is a common noun suffix meaning ‘seed’ or ‘child’, the compound has undergone semantic narrowing: today, it rarely denotes actual melon seeds in everyday speech. Instead, it evokes images of casual social settings — watching TV, chatting with friends, or waiting at train stations — where people crack open shells with their teeth and casually discard the hulls.

Sunflower seeds are sold everywhere: street vendors carry them in paper cones, supermarkets stock vacuum-packed bags, and families buy them by the kilogram for festivals like Spring Festival. The word carries warm, informal connotations and is often associated with relaxation, nostalgia, and communal snacking — not botanical precision.