Of course, this standard length has disappeared since the day chopsticks were produced. Judging from the unearthed ancient chopsticks, the length of chopsticks unearthed in the Spring and Autumn Period and the Han Dynasty is generally short, ranging from 17 to 18 cm. Silver chopsticks unearthed in the Tang Dynasty are generally long, and the longest can reach 33. 1 cm.
Extended data
Use etiquette
1, don't put the food back after you pick it up.
2. You can't use chopsticks to point at people or point fingers with chopsticks when eating.
Don't insert chopsticks into a bowl of rice or rice. This is the way the ancestral offerings are placed, which is ominous. See the end of the meal.
4. Don't compete with other people's chopsticks.
5. Don't move chopsticks in front of the host when going to dinner (the same is true for spoons).
6. In some countries, we will wait for the guests (or the oldest person present) to start eating.