Napkins should be on your knees. Pick up the napkin from the dining table, fold it in half first, and then put it on your leg with the pleated surface facing you. Never shake the napkin off, wrap it around the child like a bib, or stuff it in the neckline. It is also wrong to put a corner of a napkin into your eyes or belt. If the clothes are slippery and the napkin slips easily, you should put a corner of the napkin into your belt in a less conspicuous way, or put the left and right ends under your thighs.
Are napkins used to wipe your mouth? Napkins are of course used to prevent sauce from dripping and soiling clothes. But the most important thing is to wipe your mouth. It's really indecent to talk to people with such a respectful attitude after eating greasy food. And when drinking, it will leave oil stains on the cup, which is even more ugly. As for lipstick, wipe it with a napkin to avoid leaving lip prints on the glass.
You don't need to fold napkins neatly after eating. First pick up the napkin on your leg, fold it at will, then put it on the left side of the dining table, and then get up and leave your seat. It is impolite to shake or fold a napkin after standing up. You don't need to fold it neatly after use, but you can't just rub it into a ball. If guests or elders are present, be sure to wait until they pick up napkins and fold them.
When you leave the table for a while, you should let the napkin hang from the corner of the table. It's best to avoid leaving halfway. When you leave the table temporarily, many people will fold the napkin and put it on the chair. This is not wrong, because napkins are easily misunderstood on the table. In fact, the most ideal way is to hold the corner of the napkin with a plate or knife and let it hang on the edge of the table. Of course, the dirty side is elegant.