What is the custom of laying eggs vertically in solar terms?

Among the customs of the vernal equinox, "laying eggs" and "eating spring vegetables" are more interesting.

"Vertical Egg" is a popular game: take a fresh egg, try it several times, and finally try to stand it on the table. This is success. In the past, people thought that eggs were related to the growth and reproduction of everything in spring, and the vernal equinox was equally divided day and night, which was more conducive to finding a balance point to stand eggs, so the vernal equinox had such a custom.

Principle analysis:

The answer given by the physics teacher from a scientific point of view is that it is easier to "stand up" because the center of gravity of the yolk sinks.

As early as 4,000 years ago, China had the tradition of dividing eggs in autumn. According to ancient legend, the vernal equinox is the easiest day to lay eggs. According to historical records, eggs are divided in spring to celebrate the arrival of the vernal equinox. Oviposition reflects people's reverence and reverence for life and fertility.