Commercial vehicles: vehicles used for transporting personnel and goods in design and technical features, and can be tractor-trailer. Passenger cars are not included. Commercial vehicles are divided into three categories: passenger cars, vans and semi-trailer tractors. The passenger bus subdivided into small passenger car, city bus, coach, tourist bus, articulated bus, coach, cross-country coach and private bus. Goods vehicles are subdivided into general goods vehicles, multi-purpose lorries, full trailer tractors, off-road trucks, special operations vehicles and special goods vehicles. By the third stage, the main way to learn is to practice and understand. It is not only the practice and understanding of trading, but also the practice and understanding of life. You will realize that the market is just a person, you are dealing with the market, in fact is dealing with a person with deep connotation. When you have a new understanding, you will be the original thought fully understand what you have a new understanding, including your original have no way of technical indicators and way to trade, and analysis. Everyone is contributing to the market. Everyone is working hard for their profits. Everyone has something to learn. At this time, your study is mainly to communicate with people, exchange ideas, experience, experience, even personality. Don't limit yourself to trading and market study. Learn and improve by learning how to get along with people and get along with others. This is the learning of roots. Through this kind of study form atmosphere, calm, objective, face, easy. Atmosphere, calm, objective and face, easy to deal the importance of needless to speak, this style does not come in through the technical behavior can achieve and implementation, nor by increasing your ability to forecast analysis and money management can achieve. Before 2004, I didn't care about the fundamentals, and I didn't think the fundamentals were useful. However, in 2005, I found myself wrong, not in the fundamental way, but in the fact that I didn't use it at all. In 2005, several large transactions were conducted through basic analysis, which was far better than pure technical analysis. Fundamentals can analyze the market, and it is concluded that the approach of interval, and the technical method can be used to test the operation is correct, technical signals can be used to control transaction risk and trading right. The right level of trading can determine the size of your transaction. For me this is really a very meaningful development. And the fundamental reunderstanding comes not from books, but from communication with enterprises, communication with people, and essentially communication with society.