Around the Renaissance, the golden section was introduced to Europe by Arabs and was welcomed by Europeans. They called it the "golden method", and a mathematician in Europe17th century even called it "the most valuable algorithm among all kinds of algorithms". This algorithm is called "three-rate method" or "three-number rule" in India, which is what we often say now.
principle
Connect the upper left corner and the lower right corner of the rectangle into a diagonal line, and then make a line segment from the upper right corner to the Y' point (golden section) and cross the diagonal line, thus dividing the rectangle into three different parts. Theoretically, the golden section has been completed. Next, you can roughly arrange the scenes you want to shoot according to these three areas, or you can flip the schematic diagram 180 degrees or rotate it 90 degrees for comparison.
Refer to the above content: Baidu Encyclopedia-Golden Section Composition Method