What are the names of several lines and points in the nine squares of photographic composition?

Jiugongge composition is considered to be the easiest way to highlight the main body. Jiugongge composition is to divide the picture into nine equal squares with four lines, and there are also four intersections. Usually we can choose one of them as a point of interest. In fact, these points are in line with the "golden section law" and are the best locations. Arrange the main body in this position, which can make the picture more beautiful. Jiugongge composition is also called tic-tac-toe composition. In addition, these four points also have different visual senses. The top two points are more energetic than the bottom, and the left side is stronger than the right side. You can also try using different points when shooting.