AutumnEquinox (秋分) lies at the midpoint of autumn, (divide) autumn into two equal parts. After that day, the location of directsunlight moves to the south, making days (short) and nights longer in the northernhemisphere (半球).
is said in the ancient book is that on AutumnEquinox day the Yin and Yang are in a (balance) power. Thus the day and night are of equal length, as are thecold and hot weather.
ByAutumn Equinox, most of the areas in China (enter) the cool autumn. When the cold airheading south meets the declining warm and wet air, rainfall happens. Thetemperature also drops (frequent).
Accordingto experts, on the Spring Equinox and Autumn Equinox, the day and night are ofequal time both in the southern and northern hemispheres. Standing eggs on end, traditional Chinese custom, isconsidered the best on this day.
Butonce it (question) whetherstanding the egg had anything to do with the time. As is known now, the mostimportant thing is to shift the egg's center of gravity to the lowest part ofthe egg. In this way, the trick is holding the egg the yolk (蛋黄)sinks as much as possible. For this, you're better off choosing an egg that'sabout 4 or 5 days old, yolk is likely to sink down.