Autumn Equinox (秋分) lies at the midpoint of autumn,     1     (divide) autumn into two equal parts. After that day, the location of direct sunlight moves to the south, making days     2     (short) and nights longer in the northern hemisphere (半球).

    3     is said in the ancient book is that on Autumn Equinox day the Yin and Yang are in a     4     (balance) power. Thus the day and night are of equal length, as are the cold and hot weather."

By Autumn Equinox, most of the areas in China     5     (enter) the cool autumn. When the cold air heading south meets the declining warm and wet air, rainfall happens. The temperature also drops     6     (frequent).

According to experts, on the Spring Equinox and Autumn Equinox, the day and night are of equal time both in the southern and northern hemispheres. Standing eggs on end,     7     traditional Chinese custom, is considered the best on this day.

But once it     8     (question) whether standing the egg had anything to do with the time. As is known now，the most important thing is to shift the egg’s center of gravity to the lowest part of the egg. In this way, the trick is holding the egg     9     the yolk (蛋黄) sinks as much as possible. For this, you’re better off choosing an egg that's about 4 or 5 days old,     10     yolk is likely to sink down.