How to understand the nine squares and the three-point line in portrait photography?

What you are talking about is the so-called golden section beauty that people have summed up! Dude, the level is not enough to get on the map,

Search for photographic composition on Baidu, and Jiugongge can find related pictures. It's actually quite simple. When taking pictures, the subject is placed on these four points in the picture, which feels beautiful. This is a summative feeling. You can also put it anywhere, as long as it feels good. There are no certain rules.