'Shèng fàn' literally means 'remaining rice' — 剩 (shèng) means 'leftover' or 'remaining', and 饭 (fàn) means 'cooked rice' or more broadly 'meal/food'. Though it contains 饭, the term commonly refers to any leftover cooked food — not just rice — especially when stored for later consumption. It’s a neutral, everyday word used in home, restaurant, and kitchen contexts.

In Chinese culture, saving shèng fàn reflects practicality and frugality, but there’s also awareness of food safety: people often reheat it thoroughly or use it creatively (e.g., fried rice). It’s rarely used in formal writing, and almost never for raw ingredients or uncooked food. The compound is fixed — you wouldn’t say *fàn shèng* or substitute other characters without changing meaning entirely.