About photography: How was this light and shadow effect taken?

Fix the camera on a tripod, shoot with a wide-angle lens (or the wide-angle end of a zoom lens) with the aperture in the middle, and make the first underexposure when it is still dark at night, and then make the second exposure when the building is lit up. At this time, the aperture is the largest and the speed is slow (according to experience). After the exposure is completed, satisfactory photos with the above effects can be obtained. Note: When making the second exposure, keep the camera still during the exposure! Otherwise, it will be burnt!