How to shoot a focus night scene with a clear subject and a linearly blurred background? I’d like to share my shooting method here.
1. Turn off the anti-shake of lens and camera when shooting, it is easy to capture relatively still subjects.
2. Find a section of road with high traffic volume and nice background, 7-10 meters away from the subject.
3. The shutter can be between 1/15-1/30, the aperture is the largest, the iso is according to the needs, the higher the noise, the more noise point, try to choose the brighter street light to shoot.
4. Choose the subject to be shot, it’s better to prepare in advance, choose continuous autofocus (AF-C), the camera moves with the subject, press the shutter, try a few more times, and you will feel it.
Most mobile phones now have a professional mode, the idea is the same as the above, and this effect can also be shot!
John Shen 
Jane Brown 
Bill Lee 
James Chow