What interesting customs and practices are there during the Spring Equinox?

What interesting customs and practices are there during the Spring Equinox?
The Spring Equinox is the midpoint of the ninety days of spring. It is one of the 24 solar terms. Around March 20th of the Gregorian calendar every year, the sun is at 0° of ecliptic longitude (the vernal equinox). On the day of the vernal equinox, the sun shines directly on the earth's equator. The seasons in the northern and southern hemispheres are opposite. In the northern hemisphere, it is the vernal equinox, and in the southern hemisphere, it is the autumnal equinox. Did you know there is a very interesting custom on the day of the Spring Equinox? "Flowers bloom in February", the second month of the lunar calendar is also called the Apricot Month. To check the relevant content of the daily almanac, please click on the special topic of February of the lunar calendar in 2020 on Shuimoxiansheng.com!

Spring Equinox Egg

On the day of the Spring Equinox every year, the "egg standing game" is popular among people all over the country. This Chinese custom has long been spread abroad and has become a "world game." 4,000 years ago, Chinese ancestors began to use this to celebrate the arrival of spring, and the saying "When the spring equinox comes, the eggs will be prettier" has been passed down to this day.
The gameplay of the "Egg Standing" game is simple, easy and fun: choose a smooth and symmetrical fresh egg that has been laid just four or five days ago, and gently stand it upright on the table. Although there are many failures, there are also many successes.

The principle of standing eggs on the vernal equinox

1. The day of the Spring Equinox is the day when the day and night are equal in the northern and southern hemispheres. The Earth's axis and the orbital plane of the Earth's revolution around the sun are in a state of relative balance, and the Earth's magnetic field is also relatively balanced. Therefore, the Spring Equinox is a good day for standing eggs upright, and the success rate of making eggs stand upright is relatively high.
2. There are many protrusions about 0.03 mm high on the eggshell. Three protrusions can form a triangular plane. If the center of gravity of the egg passes through this triangle, the "vertical egg" can be achieved.

The result of standing an egg on the spring equinox

1. Ordinary eggs, double yolk eggs, free-range eggs and boiled eggs, regardless of the variety, can be stood up.
2. Compared with raw eggs, cooked eggs are not easy to stand up.
3. It is easier to make an egg stand up if you are careful and patient; the more impatient you are, the harder it will be to succeed.

Tips for standing eggs on the Spring Equinox

1. When choosing eggs, you should first select eggs with one end larger than the other. When standing the egg, place the larger end facing downwards so that the center of gravity will be lower, like a tumbler, making it easier to maintain balance.
2. Find a suitable support surface. We did a small experiment. We applied ink on the table and then stood an egg on the table. You can find that the egg that can stand upright has a plane at the bottom that is difficult to see with the naked eye. Once the line of action of gravity can pass through this plane, the egg can stand up.
3. Keep your hands steady. The position of the yolk in a raw egg will also affect the egg's standing condition, so the hand holding the egg should be kept as still as possible to allow the yolk to slowly settle to the bottom of the egg. This way, the center of gravity will be low enough to keep the egg balanced.

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