Click the green flag. Click the green flag while holding the shift key down, it will turn on turbo mode. If you like this, look at https://scratch.mit.edu/projects/756449466/ https://scratch.mit.edu/projects/780509100/ https://scratch.mit.edu/projects/755220752/ https://scratch.mit.edu/projects/755220752/
I used the pen. Thanks to @mboyandlego16_sonic for the idea of using turbo mode.