Long ago, people traveled on their legs. Later, horses replaced people's legs. But probably because of the temperament of horses, it is very troublesome to feed them, so people germinated the idea of replacing horses with machines.

1790, the Frenchman siha invented the two-wheeled wooden horse. Although the wheels can turn, you still need to push the ground with two feet in turn to let the Trojan horse move forward. This Trojan horse can be said to be the prototype of a bicycle.

18 17, Baron delaisse improved the Trojan horse and added a handle in front, but he still had to drag his tired feet on the ground. By 1839, the Scottish blacksmith Macmillan installed pedals on both sides of the front wheel, and the real "pedal bicycle" finally appeared. 1888, Dunlop, an Englishman, invented pneumatic tires, which further developed bicycles. Since then, people have continuously improved their bicycles, and finally made them look like what they are now. So it can be said that bicycles are the crystallization of human long-term wisdom.

The appearance of bicycles has brought great convenience to people. With the development of society and science and technology, bicycles are now more convenient and practical.

Ride a bike