How are the solar terms of the earth distinguished in rotation?

What you should ask is how to distinguish the solar terms of the earth on the revolution map. On the revolution map, perihelion is the winter solstice and apogee is the summer solstice. After making these two judgments, we can judge the vernal equinox and autumnal equinox according to the direction of revolution. When the direct point of the sun is the winter solstice on the tropic of cancer and the summer solstice on the tropic of cancer, you can also draw an extension line along the sun to the earth. On the equator, it is the vernal equinox or the autumnal equinox.