When the spring sun shines on the streets and alleys of the city, the combination of technology and fashion E-bikes are becoming the new "top stream" on the streets of Europe and the United States, and even in the most conspicuous position of some bicycle shop windows, the latest E-bike is opening up its own track. In the eyes of enthusiasts, E-bike, as an electric-assisted bicycle, is not only a means of transportation that leads riders to explore unknown roads, but also a symbol of freedom, al