Mountain Bicycle knowledge popularization

Mountain bikes, originating in the United States, were developed by American young people for the purpose of stimulating their motorbikes to compete on the off-road terrain of motorcycle races. Later, cross-country sport gradually became popular in Europe and the United States and formed an event.

Another advantage is that:

(1) environmental protection. The air quality is getting worse and worse. One of the most important reasons is the large emission of automobile exhaust. There is no exhaust gas on the bicycle. It can contribute to our blue sky project.

(2) Security. It's okay to ride a bicycle if it collides with someone else. A smiley face, I'm sorry to be able to solve it, and people are generally okay.

(3) Save money. Buy money for a car and buy N bikes. And it also saves money on gasoline maintenance.