The autumnal equinox egg means that on the autumnal equinox day, the egg can be placed vertically without falling, that is, upright. This phenomenon is because the sun shines directly on the equator at the autumnal equinox, and the gravity on the earth is in balance with the gravity of the sun, so eggs can complete this magical performance.
In Feng Shui, the separation of eggs in autumn is considered as a symbol of good luck, representing family harmony, perfect interpersonal relationship and prosperous fortune. Therefore, many people lay eggs on the autumnal equinox, which means bringing good luck and blessings to their families. In addition, dividing eggs in autumn can also exercise children's observation, hands-on ability and scientific inquiry spirit.
Generally speaking, egg splitting in autumn is an interesting traditional custom, which expresses people's awe and reverence for life and fertility, and is also conducive to promoting children's all-round development.
Meteorological changes of autumnal equinox
According to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost". The "vernal equinox" is exactly half of the 90 days from beginning of autumn to the first frost. Since the autumnal equinox, the climate has three main characteristics: the direct sunlight continues to move from the equator to the southern hemisphere, and the phenomenon of short days and long nights in the northern hemisphere will become more and more obvious until the winter solstice reaches the longest night and the shortest day; The temperature difference between day and night gradually increases.
The situation in the southern hemisphere is just the opposite. After the autumnal equinox, the direct sunlight moves south, the days in the northern hemisphere become shorter, the nights become longer, and the temperature drops, which is of universal significance throughout the country.
At the autumnal equinox, China's Yangtze River basin and its vast areas to the north successively entered the autumn divided by "climatic average temperature", and the daily average temperature dropped below 22℃. The cold air mass in the north began to have some influence. The rainy season has just ended in most areas, with a cool breeze blowing gently. Autumn is crisp and the sky is high and the clouds are light.
After the autumnal equinox, the direct sunlight moved to the southern hemisphere, and the northern hemisphere got less and less solar radiation, but the ground lost more heat and the temperature dropped significantly. Agricultural proverbs say: "An autumn rain is a cold", "The white dew is divided into autumn nights, and one night is cold".
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