The function of napkin is summed up in three points: wipe mouth, prevent juice dripping on clothes, dirty clothes, seat.
To understand its function, the following questions are easy to understand:
Why are napkins usually folded or spread out on the thighs instead of around the neck? Because as long as the range is not particularly large when you eat, the probability that the juice of food drops on your legs is much higher than that of throwing it on your chest, and it’s not beautiful around your neck.
Why do some people put napkins on chairs? This is very similar to the nature that we usually use things to occupy seats, because putting a napkin on a chair is equivalent to telling others that there is someone in this seat, but we just leave halfway and have to continue to eat when we come back.
