Talk about the common sense of photography that ordinary people should know?

The size of the person should be about 1/3 of the picture. On the one hand, the subject is clear, on the other hand, you can try to block irrelevant tourists with the trunk of the subject. Be clear about what the other person wants and try to be satisfied, even if you have to move. He stood there when a classmate gave him a camera, and he stood there when he was photographed. I took a look, but I didn't get any pictures of the scenery I wanted to see. Communicate with each other as much as possible. If you can make your own composition and exposure, the invited students will be perfect as long as they press the shutter. Don't take a half-length photo below the waist, but take a full-length photo on your feet. This is a cliche, but it is very important. Remember, don't take a half-length photo below the waist, but take a full-length photo on your feet.