2. Only when A and B are not both existing technologies, or there is no obvious technical revelation to combine them according to their respective functions, or the combination of the two has produced unexpected technical effects, creativity will be satisfied. When writing, you can directly describe the shape, connection relationship and position relationship of A and B. As for which part of bicycle B will be connected, you can write it separately selectively, or you can summarize an upper concept by using the same functions of the three.
3. The statement that "B will not cause any damage to the bicycle" should be avoided as far as possible in the claim, because the function is realized by the structure. If there is a definite structure, it should be defined by the structure, and the direct function of the structure should be written in the manual.