How to use the one-third and one-half dividing line in photography?

Generally, the general picture ratio is 4 to 3, such as 16 to 9. Looking horizontally, if the dividing line is divided into two, it is half, such as the horizon and waterfront dividing line. Generally, it looks dull and lifeless, so put this line at about one third. Look at the auxiliary lines of photography. Many pictures are tic-tac-toe, which is the usual meaning. You can draw lines. If your picture scale is 1 to 1, it's just a square picture, and it doesn't look so hard in the middle. I think it's ok to look at a square picture, no matter how it is composed.