How were chopsticks invented? And how to use it··

Our country is the first country in the world to invent and use chopsticks. As early as the Shang and Zhou Dynasties, ancient Chinese people began to use chopsticks. In the opinion of some researchers, chopsticks are Chinese and are the quintessence of China in terms of diet. In our "Book of Rites of Zhou" it is written: "The child can eat, so teach him to use his right hand." That is to say, when your child is old enough to eat, you must teach him to use his right hand to hold chopsticks to eat. Chopsticks, according to documentary records, should have been first invented in the Shang Dynasty. However, archeology has provided some evidence, which should be said to prove that chopsticks existed in the Shang Dynasty, but we can go further. Because a copper chopstick head was unearthed in a large tomb in Yin Ruins. It was just a set head, made of copper. Then a wooden pole is attached to it to make a complete chopstick. Of course, when it was unearthed now, the wooden pole had already decayed. The earliest chopsticks were probably relatively simple, and later they were made of copper, gold and silver, and even jade, but the ones that were widely used were still made of bamboo. The earliest copper chopsticks we have discovered now should belong to the Spring and Autumn Period. A pair of chopsticks was found in a copper coffin in Yunnan. In addition, a pair of chopsticks was found in a Spring and Autumn Tomb in Guichi, Anhui. There are round chopsticks and flat chopsticks. There are no chopsticks like the round ones we have now. We would also like to mention the Han Dynasty portrait stones. There are many scenes of using chopsticks in the stone portraits of the Han Dynasty. Chopsticks are clearly placed on their dining tables, on their plates and in their bowls. They are all depicted and relatively vivid. Among them, there is a "Picture of a Filial Son", in which the son holds a piece of food with chopsticks and brings it to his father's mouth, showing his filial piety and showing the scene of using chopsticks. In a mural in Dunhuang, men and women are sitting together and eating. In front of each person is a spoon and a pair of chopsticks. These two items cannot be missing. In the famous "Han Xizai Night Banquet", the hosts of these banquets also placed chopsticks on their dining tables. You can't tell if you don't look carefully, but the painter at that time was very careful and painted the chopsticks; and they were one pair for each person, so the painting was very clear. In some other painting materials, we can all see the image of chopsticks, which shows that the ancient Chinese used chopsticks as a necessary tableware on the dining table. This should be a civilized symbol of Chinese food culture.