There is a circle 3 in the box. He meant orders. Below are the boxes in the circle, which are 1 and 3, with a difference of 2.

If there is a triangle in the box, it is 6, then there is a circular difference of 3 between it and the box.

There is a box in the triangle that is 4, so it is 2 less than 6.

According to this rule, it can be concluded that there are 9 and 6 cycles in the triangle, with a difference of 3.

Personal understanding for reference.