Yo-yo, also known as "yo-yo", is a kind of toy that is popular all over the world. Although the operation is simple, it has a unique charm and attracts countless people. Maybe you don't know, but the toy yo-yo has a long and interesting history. Research shows that yo-yo probably originated in China, but the earliest historical record of yo-yo appeared in Greece in 500 BC. This ancient toy was originally made of wood, metal or colored clay, and was then called a "disc". According to local customs, when a child comes of age, he should give his childhood toys to God. Therefore, this kind of "disc" made of clay is the best sacrifice because of its fragile characteristics. Now, people can find this primitive yo-yo and a vase with Greek teenagers playing yo-yo in the National Museum in Athens, Greece. According to historical records, in the 6th century/kloc-A.D., hunters in the Philippines often hid in trees and hit wild animals passing under them with a 20-foot-long rope with stones hanging at the front end. This weapon can be thrown and pulled back at will to meet the needs of multiple hunting. Many people think that this is the real origin of yo-yo, but this is only people's subjective imagination and has no factual basis. What is certain, however, is that the yo-yo not only spread from China to Greece, but also to the Philippines, and it has become a fashionable toy for local children for a long time. 1765, India made a small box similar to a yo-yo with a girl playing on it. In the next 25 years, yo-yo spread from East Asia to Europe, especially loved by Scottish, French and British nobles. In the process of spreading, the names of yo-yo are also varied. In Japan, yo-yo is vividly called "unicycle" or "money wheel". During the French Revolution, many French nobles fled to other countries to escape the peasant uprising, and they did not forget to take a luxurious yo-yo made of glass or ivory when they left. At this time, they called the yo-yo L 'Emigrette, which means "leaving the motherland" in French. 179 1 year, the yo-yo was called "Joujoude Normandie" when it was introduced into Paris. Some people think that this name is the predecessor of the name yo-yo. In the historical years, an important value of yo-yo is that it can relieve people's psychological pressure. In France, it is said that death row inmates who are about to go to the guillotine will play yo-yo to relieve their inner tension and fear. In the famous Battle of Waterloo in 18 15, Napoleon and his army also played yo-yo to relax themselves before the battle. The famous French playwright Pierre Augustin Caron de Beaumarchais's The Wedding of Figaro once again proves this function of the yo-yo. There is a scene like this: when the anxious Figaro appeared, he didn't rub his hands to show his nervousness, but hit a yo-yo. When someone asked him what's the use of playing yo-yo, Figaro replied, "It's a noble toy, which can dispel the fatigue of thinking." In the 1920s, a Filipino named Pietro Flores brought the first yo-yo to America. 1928, he founded the yo-yo company named after himself in California. These yo-yos have changed the previous method of fixing the line on the shaft, winding the line loosely on the shaft, so that the yo-yo can rotate and stop at the end of the rope to idle. Today's yo-yo still does this, so that the yo-yo can not only rotate up and down, but also change endless patterns. 1929, a businessman named Donna Duncan saw a yo-yo made by Flores in San Francisco. When he witnessed the scene that many people were attracted by Pietro's yo-yo, he thought that this toy contained great commercial potential, so he bought Flores Company. Donna Duncan deserves to be an excellent businessman. He stepped up advertising and trained some yo-yo demonstrators in the United States and Western Europe. These "Deng's yo-yo experts" traveled all over the United States, guiding and performing yo-yo skills for people, and holding various yo-yo competitions to increase sales. Other companies will not miss this opportunity to make money after seeing the profit brought by yo-yo, and the competition among yo-yo companies will also intensify. 1932, Duncan registered the trademark of "yo-yo" in order to safeguard his own commercial interests. Other yo-yo companies can only name their products with names such as go ball and spin ball. 1946, Duncan company can produce 3600 yo-yos per hour, becoming the "world yo-yo center". 1960, they produced the plastic yo-yo that people later became familiar with. As the yo-yo craze swept the world, the federal court cancelled the trademark patent right of "yo-yo". Since then, the word "yo-yo" has spread widely and become a special term in language. Unfortunately, 1965 1 1 month, Duncan Company declared bankruptcy due to poor management and was taken over by Torch Plastics Company. But the name and reputation of "Duncan" have been preserved. Today, Torch Plastics Company is still manufacturing and selling 1 1 kind of "Duncan Yo-Yo". On June 6th every year, Duncan's birthday is designated as National Yo-Yo Day to commemorate his contribution in the field of yo-yo. With the progress of science and technology, the yo-yo team is also growing. 1978, Tom kus made the first yo-yo that can remove and replace bearings by hand. 1980, Michel caffrey created the "intelligent yo-yo". Not only can it rotate freely for a long time, but also its built-in centrifugal spring can make the yo-yo automatically bounce back to your hand. In the 1990s, the ball yo-yo appeared, which once again increased the idling time. 1April, 985 12, as part of the space toy program, the yo-yo was first brought into space by NASA's Discovery spacecraft. Scientists have found that the yo-yo can move slowly and gracefully along the rope in space, but it can't stand still. Without downward gravity, the yo-yo can't rotate and bounce back on the rope. In addition, in space, yo-yo can't fall freely and must be thrown out. 1July 3, 9921day, the yo-yo went into space again on the Atlantis spacecraft and filmed the yo-yo teaching video. Nowadays, yo-yo has become popular all over the world, and many countries have established yo-yo associations, such as Ayya (American Yo-Yo Association), JYya (Japanese Yo-Yo Association) and HK YYFC (Hong Kong Shake Technology Association). Whether the yo-yo is made in China, Greece or the Philippines has not been verified yet, and it is difficult for us to say exactly whether this toy has ever flowed between countries. We only know that it is unparalleled as a toy that is popular all over the world and has a long history. Although it sometimes disappears for a period of time, just like the characteristics of yo-yo, its popular trend is always periodic.