As far as unearthed objects are concerned, in the middle and late Spring and Autumn Period, Chu had a small scale-wooden scale. According to legend, Fan Li found in his business that it was difficult for people to trade fairly when buying and selling things in the market, so he came up with the idea of creating a tool to measure the weight of goods. One day, on his way home from work, Fan Li happened to see a farmer pumping water from a well. The method is very clever: erect a tall wooden stake at the well side, and then tie a crossbar at the top of the wooden stake; One end of the crossbar is hung with a bucket and the other end is tied with a stone, which is light and labor-saving. Inspired, Van Litton hurried home to imitate: he drilled a small hole with a thin straight wooden stick, tied a hemp rope to the hole and weighed it with his hand; One end of joiner is tied with a hanging tray for loading goods, and the other end is tied with a pebble as a heavy object; The farther the pebbles are from the rope, the more goods can be lifted. So he thought: how much goods to hang at one end and how far the other pebble has to move to keep balance, it is necessary to carve a mark on the fine wood. But what should I use to mark it? Fan Li thought hard for months, but still missed the point. One night, Fan Li went out for a nap. When he looked up and saw the stars in the sky, he had a whim and decided to use the six stars in Nandou and the Big Dipper as markers. One star represents one or two, and ten Samsung represents one catty. Since then, a unified measuring tool-scale has appeared in the market. However, according to available data, the earliest name in the world appeared in Egypt, about 5,000 years ago. I hope I can help you.