Solar term earth rotation

In both cases, the direction of rotation and revolution is counterclockwise.

Look at the left picture and the right picture first to understand two kinds of rotation diagrams:

The north pole facing the central sun is the summer solstice, such as A in the following figure 1 and C in Figure 2;

The south pole facing the central sun is the winter solstice, such as C in figure 1 and A in figure 2 below;

Then determine the vernal equinox and autumnal equinox in the order of spring, summer, autumn and winter from the counterclockwise direction (the direction of the earth's revolution)-the vernal equinox is D in figure 1, B in figure 2, B in figure 1 and D in figure 2.

This shows that the position of the bisector in Figure 1 and Figure 2 is just the opposite.