I want to ask a question. Is the autumnal equinox in the southern hemisphere the same as the vernal equinox in the northern hemisphere?

The seasons in the northern and southern hemispheres are opposite. When the northern hemisphere is the vernal equinox, the solar terms in the southern hemisphere are the autumnal equinox.

Due to the direct sunlight in the southern hemisphere, the seasons are just the opposite. At the southern hemisphere vernal equinox, the northern hemisphere is the autumnal equinox (the sun points directly at the equator), and the southern hemisphere is the winter solstice (the sun points directly at the tropic of Capricorn). The southern hemisphere is just the opposite of the northern hemisphere, but the months are the same. For example, it is June in the northern hemisphere, so it is June in the southern hemisphere, but it is winter in the southern hemisphere in June, so our vernal equinox, that is, the autumn equinox in the southern hemisphere, is relative.