In 1866, the Qing Dynasty sent the first overseas expedition, in which Zhang Deyi, a 19-year-old boy, used the word "bicycle" in his travel notes, so the word "bicycle" first appeared and has been used ever since.
Bicycle is a traditional industry with a history of more than 100 years. Due to the problems of environmental protection and transportation, bicycles have once again become a favorite means of transportation and fitness for residents in countries around the world, especially in developed countries. The focus of the world's bicycle industry is changing from traditional means of transportation to sports, mountain and leisure. In developed countries such as the United States, Europe and Japan, bicycles are a more common form of sports, fitness Leisure and recreational products. There is a huge demand for bicycles around the world every year. According to the statistics of Japan's CYCLEPRESS, the demand for bicycles around the world remains at 106 million units, and the annual turnover of bicycles is about 5 billion dollars.
Bicycle is one of the most successful human machines invented by human beings. It is a complex machine composed of many simple machines. In the unofficial history of the Qing Dynasty published in 1915, it was said that "a two wheeled car made by Huang Lizhuang is more than three feet long. It can sit on one person without pushing or pulling, and can walk on its own. When it goes, it turns around the axle by hand, and then it returns to the original. It can walk 80 Li in the day when it stays and pulls." It should be pointed out that due to the limitations of the times and other reasons, some viewpoints and terms in the book are inevitably different from today's understanding. In particular, the editors pay attention to searching for strange things and hunting for beautiful women. Some parts are not records of absurd rumors, not historical records. Readers should identify these when reading and using them. In 1790, the French sifrak first made a bicycle. It is also said that in 1817, the German Carl drees invented the world's first bicycle.