There is no "how", except "cheap" is about capital. A small factory in China follows suit, and no one cares about the cycling circle. Look at the workmanship on the surface of the frame, the water used for painting, and the accessories (Jianda 700c tire, Xinlong handlebar set-this is a so-called Taiwan Province brand, which is actually made by ordinary domestic factories, but it is better than miscellaneous brands and Simano entry-level kits. ), still more responsible than many miscellaneous brands. This kind of special "road car" can buy food for commuting if you ride it occasionally. If you want to "into the pit" (take a road bike as a long-term exercise/fitness/exercise/long-distance ride, or "play"/"fever" ride), you must at least have a real international or domestic brand of road bike, and there are complete official marketing and after-sales warranty channels in China. That is, "Thunder" (because the trademark is a lightning-like S), "Lost", that is, "Dacui", "Cube" (just introduced, but not many models) and "Marin" (an old brand that is taller than Giant, but not many models just entered China); Giant ("Huge" and "Big G") in Taiwan Province Province, China, not to mention this, is the representative of China's cost performance, Merida ("Tankeda"); XDS is famous in China, and its nickname is terrible? For example, some cyclists in the circle don't like it because of Xiao Diao Si), ZGL ("Little Pig" and "Sitting Old" are also dragged down by nicknames, but the cost performance is still higher than that of Giant), and China Attack (KUNG, the leading professional team brand in China, has a higher cost performance than Giant). . . The key to choose/ride a road bike is to look at the "geometry", have a responsible and level brand, and each bike will be equipped with a "geometry map", because there are many kinds of road bikes (Tiesan, TT timing, racing, wind racing, pneumatic wind racing, climbing, endurance, long distance, long distance endurance, CX cross country, gravel cross country, etc.), which are all in Europe, America and some parts of China. The riding experience is also different (for example, the speed of puma on a flat road, TT timing and pneumatic breaking wind racing are the fastest, and you can even get on a high-speed puma car, but you will kneel down when you encounter a big climb. It is suitable to ride a climbing road with many slopes, such as long-distance riding, long-distance cycling or long-distance endurance riding. It will definitely be more comfortable than other types, and it is not easy to ache all over. There is a height adaptation table in the geometric drawing. The size of the car must match the height, otherwise it will be uncomfortable everywhere and cause riding injuries (knees, waist, cervical vertebrae, elbows, wrists, etc.). ). Therefore, for those who don't give the geometric drawing and only have one or two sizes to raise their height from 1.55 to 1.9, they can ride by adjusting the height of the cushion and pass directly. . . . The size of road cars is in increments of 2cm, and big brands generally have 5 to 8 sizes, so it is easy to adapt to their height. . . Then, you must try riding, especially for beginners, and don't buy cattle across the mountain. Because people have different arms and legs, waist muscles, flexibility and coordination, even if it is 1.75 meters high, riding the same size will have some discomfort! Technicians in the store are required to fine-tune the height and front and rear positions of some accessories. . . Finally, if you ride a road bike for a long time, you'd better go to a car shop with professional equipment for a fitting (what to teach for fitting, the online search is all about the very basic and important knowledge of ergonomics and health kinematics in the field of road bikes). . . If you think the above is too much trouble, or the investment can't bear it, then don't blindly follow suit. Buy 1000 giant entry-level mountain bikes, such as riding with ATX660, which is more suitable for you!

= = The specific types and applications of road vehicles are different (taking lightning as an example) (Giant also has similar vehicle differentiation):

= = Geometric drawing, this is the entry-level aluminum alloy road bike of Lightning, all of which have 7 sizes.