The concept of 面巾纸 reveals a significant cultural difference between China and many Western countries regarding public amenities.
The “Bring Your Own Tissue” (BYOT) Culture: In the West, it's standard for restaurants, from fast food to fine dining, to provide free napkins. In China, this is not the case, especially in more casual eateries, food courts, and street food stalls. It is an unspoken social rule that you should have your own pack of 面巾纸 with you. Many restaurants will sell small packs for 1 or 2 RMB if you forget. This self-reliance is a small but important aspect of daily life.
A Practical Multipurpose Tool: While a Westerner might distinguish between a “tissue” (for your nose), a “napkin” (for your mouth at dinner), and a “paper towel” (for spills), 面巾纸 often covers all these functions in informal settings. It is the Swiss Army knife of personal paper products in China. You use it to wipe your mouth after eating noodles, clean your hands after peeling an orange, or wipe down a slightly dirty seat on the subway.
A Small Act of Kindness: Because everyone carries them, offering a 面巾纸 to someone in need—a friend who is crying, a stranger who has spilled their drink, or a colleague who is sneezing—is a very common and simple gesture of goodwill.