On the Chinese lunar calendar, “Autumn Equinox” is the beginning of autumn and thisday is just at the middle point between “Autumn Begins” to “Hoar-Frost Falls”. After“Autumn Equinox”, the temperature decreases obviously, just like the old proverbsamong the farmers, “Each autumn rain makes it’s colder”, “The night of White Dewsand Autumn Equinox, one night is colder than the one before”.