How to spell a bicycle with a 24-inch magic ruler

The 24-inch magic ruler can be assembled into a folding bicycle. The installation steps are as follows: 1. Install the frame on the underframe and fix it with screws. 2. Install the front fork on the front wheel and lock it with screws. 3. Install the handlebar on the frame and fix it. 4. Install the pedal on the front fork and fix it with screws. 5. Install the seat cushion at the rear of the handlebar and fix it. 6. Install the flywheel on the underframe, and install the crank drive to make it firm and stable. 7. Finally, check whether all parts are installed firmly, and then complete the assembly operation.