No matter how expensive casual clothes are, you can't just wear them to the restaurant.
It is common sense for Europeans and Americans to dress appropriately when eating. To go to high-end restaurants, men should wear neat tops and leather shoes; A lady should wear a suit and shoes with heels. If formal clothes are required, men must wear ties.
4. Sit on the left side of the chair. The most suitable sitting position is sitting on the left. When the chair is opened, the body will stand up straight at a distance that almost touches the table. The leader pushes the chair in, and the legs bend and touch the chair behind, so you can sit down.
When eating, the upper arm and back should lean on the back of the chair, and the abdomen should keep a distance of about a fist from the table. Sitting with your feet crossed is best avoided.
6. When drinking, you should never suck and drink, but tilt the glass like you put the wine on your tongue. Shake the glass gently and let the wine come into contact with the air to enhance the mellow taste of the wine, but don't shake the glass violently.