What do the Autumn Equinox and the Year of the Golden Ox have in common?

The year of the Yin Metal Ox (the Golden Ox) started on Feb 12, 2021. The autumn equinox is usually around the 21st of March each year in the southern hemisphere & around the 21st of September in the northern hemisphere. So, what do these events have in common? In the Chinese medicine framework of [...]