Thrift and Frugality: The concept of having a `剩余` is deeply connected to the traditional Chinese value of 节约 (jiéyuē), or thrift. Having `剩余` food, money, or resources is not just a practical matter but a sign of good planning, foresight, and a well-managed household or business. Wasting resources is heavily frowned upon, so ensuring there is a `剩余` to be saved or used later is considered a virtue. This is why it's extremely common to take home leftover food from restaurants (打包 dǎbāo), a practice that is seen as sensible, not cheap.
Western Comparison: In English, the word “leftovers” can sometimes carry a slightly negative connotation, as in “Oh, we're just having leftovers again.” In contrast, 剩余的饭菜 (shèngyú de fàncài) is a much more neutral and descriptive term. Similarly, “surplus” in English is often used in a large-scale economic or technical context (e.g., “budget surplus,” “agricultural surplus”), whereas `剩余` is used fluidly in everyday life for even the smallest amounts.
The “Leftover” People (剩女/剩男): In the last two decades, `剩` has taken on a new, highly charged social meaning with the creation of the term 剩女 (shèngnǚ), or “leftover woman.” This term refers to an unmarried woman, typically in her late 20s or older, who is often well-educated and financially independent. The parallel term 剩男 (shèngnán) also exists. These terms reflect societal pressures regarding marriage and family, and while widely used in media, they can be considered derogatory and are a topic of intense social debate in modern China.