Chopsticks (kuài zi) are the traditional eating utensils used across much of East Asia, especially in China. The character 筷 (kuài) originally meant 'quick' or 'fast', reflecting the dexterity required to use them effectively; it was later combined with the diminutive suffix 子 (zi), which commonly forms concrete nouns for small or familiar objects. Together, 筷子 refers specifically to the pair of slender, equal-length rods — typically made of wood, bamboo, plastic, or metal — held in one hand to pick up food.

They are deeply embedded in Chinese dining culture: placed neatly beside the bowl, never stuck upright in rice (a funeral taboo), and often exchanged as gifts symbolizing harmony and unity (since 'kuài' sounds like the word for 'quick' and also resembles 'double happiness'). Chopsticks are used daily at home, in restaurants, and during festivals — not just for eating, but also in idioms and proverbs about cooperation and coordination.